What Is the Best Shampoo for Greasy Hair?

Contents:

• Understanding Greasy Hair
• Kérastase Genesis Anti-Oil Shampoo (£28–£35)
• Nizoral Anti-Dandruff Shampoo (£6–£8)
• Bumble and Bumble Sunday Better Days Dry Shampoo Texture Spray (£28)
• Sachajuan Scalp Shampoo (£22–£26)
• Philip Kingsley Flaky/Itchy Scalp Shampoo (£17–£20)
• Puracy Natural Shampoo (£6–£9)
• Redken Scalp Relief Shampoo (£9–£12)
• Olaplex No.4C Bond Clarifying Shampoo (£26–£32)
• Comparison Table: Quick Reference
• How to Choose the Right Shampoo for Your Greasy Hair
• Consider Your Scalp Type and Sensitivity
• Think About Your Hair Length and Type
• Evaluate Your Current Routine
• Budget Matters
• Give Products Time to Work
• Top Tips for Maximum Effectiveness
• Frequently Asked Questions
• How often should I wash greasy hair?
• Can I use the same shampoo and conditioner for greasy hair?
• Why does my hair get greasy so quickly even after washing?
• Is dry shampoo bad for greasy hair?
• What’s the difference between clarifying shampoo and regular shampoo for greasy hair?
• Making Your Decision

Most people think greasy hair means you need to wash more often. Wrong. The truth is that over-washing actually trains your scalp to produce even more oil, creating a vicious cycle that leaves your hair looking limp and flat within hours of shampooing. The good news? Choosing the right shampoo for greasy hair can completely transform how your scalp behaves and how fresh your hair looks throughout the day.

Finding the best shampoo for greasy hair requires understanding what causes excess oil production in the first place. Your scalp naturally produces sebum—a protective oil that keeps your hair healthy. When you strip away too much of this oil, your scalp panics and overcompensates by producing even more. The right product works with your scalp rather than against it, gently removing excess buildup whilst maintaining the natural balance your hair needs.

If you’re shopping for a shampoo and feeling overwhelmed by options, this guide breaks down everything you need to know. We’ve compared eight of the best products on the market, highlighted what makes each one special, and included practical tips for getting the most from your shampoo routine.

Understanding Greasy Hair

Before diving into specific products, it’s helpful to understand why your hair becomes greasy. Your scalp contains sebaceous glands that produce sebum, an oily substance that protects your hair and skin. In healthy amounts, sebum keeps hair shiny and protected. The problem arises when these glands produce excessive amounts, leaving hair looking limp, lifeless, and unwashed despite regular cleaning.

Several factors contribute to greasy hair. Genetics plays a significant role—if your parents had oily hair, you’re more likely to experience the same. Hormonal changes, particularly during puberty and menstrual cycles, can increase sebum production. Environmental factors like humidity and pollution also influence how oily your hair becomes. Product buildup from conditioners and styling treatments can trap oil against the scalp, making hair appear greasier than it is. Additionally, stress and poor sleep can trigger hormonal imbalances that increase sebum production.

The washing habits you’ve developed also matter enormously. Daily shampooing with harsh sulfate-based products strips away protective natural oils, prompting your scalp to overproduce sebum as compensation. This creates a frustrating cycle: the more you wash, the greasier your hair becomes, encouraging more frequent washing. Breaking this cycle is central to finding the best shampoo for greasy hair and establishing healthier hair long-term.

1. Kérastase Genesis Anti-Oil Shampoo (£28–£35)

Kérastase Genesis is specifically formulated for oily and sensitive scalps. This French luxury brand has been a staple in salons for decades, and their Genesis line is their dedicated solution for scalp control. The shampoo contains prebiotic thermal water that helps rebalance your scalp’s microbiome, reducing the triggers that lead to excess oil production.

What makes this stand out: The formula includes a patented complex called Probiotics Balancing that works over time to reduce sebum secretion. Most users report noticeable improvement within two to three weeks of consistent use. The shampoo foams beautifully and has a fresh, salon-like scent that makes your morning shower feel like a treat. The bottle size is generous at 250ml, and because the formula is concentrated, you need only a small amount per wash.

The prebiotic approach is backed by emerging dermatological science. Your scalp hosts a complex microbiome of bacteria and fungi. When this microbiome becomes imbalanced, scalp conditions worsen and sebum production increases. Kérastase’s prebiotic formula doesn’t kill bacteria indiscriminately; instead, it feeds beneficial bacteria whilst discouraging problematic ones. This restores balance naturally rather than through harsh chemical intervention.

Pros: Scientifically formulated, long-term results, pleasant to use daily, works well for sensitive scalps, French luxury credibility. Cons: Premium price point, requires consistent use for results, can feel slightly drying if you have longer hair, may not suit those who prefer natural formulations.

Best for: People willing to invest in a luxury product who want clinical results backed by proper research and prefer established salon brands.

2. Nizoral Anti-Dandruff Shampoo (£6–£8)

Nizoral is a clinical shampoo originally designed to treat fungal infections and dandruff. However, many dermatologists recommend it for greasy hair because excess oil often correlates with scalp conditions. The active ingredient, ketoconazole (2%), is uniquely effective at controlling sebum production and addressing Malassezia yeast, which often thrives in oily scalp environments.

This isn’t a daily-use shampoo. Most dermatologists recommend using it twice weekly and alternating with a gentler cleanser. The formula is no-frills and honest—it does one job exceptionally well. Within two to three uses, many people notice their scalp feels less oily and their hair looks fresher longer. The ketoconazole works by disrupting the yeast’s growth cycle whilst also helping to normalise sebum production.

What makes Nizoral particularly valuable is its clinical approach. This isn’t a cosmetic product making vague promises; it’s a medicated shampoo with specific active ingredients and proven efficacy. The trade-off is that it lacks the luxurious feel of premium brands. The formula doesn’t lather abundantly, and many users find it slightly drying on the hair lengths. However, if your primary concern is scalp oil control, the results often justify these minor downsides.

Pros: Affordable, clinically proven, dramatic results, minimal ingredients, medicated approach, effective against scalp yeast. Cons: Can be drying with daily use, not suitable for daily shampooing, unscented (which some find clinical rather than luxe), may leave hair feeling slightly rough.

Best for: Budget-conscious shoppers or those whose greasy hair stems from scalp conditions like seborrheic dermatitis or mild fungal issues. Also suitable for those combining it with a gentler conditioner.

3. Bumble and Bumble Sunday Better Days Dry Shampoo Texture Spray (£28)

This isn’t technically a shampoo, but it deserves inclusion because it’s a game-changer for greasy hair between washes. The texture spray absorbs oil and adds volume without the need for water. It contains rice starch and sea salt to absorb sebum whilst polymers add grip and texture to the hair shaft. The formula is lightweight and designed specifically to extend time between wet shampoos.

Americans on the West Coast have embraced dry shampoo as a daily tool—some use it every other day to extend time between washes. British consumers are catching up. Used strategically, dry shampoo can reduce your washing frequency from daily to every other day or every three days, which gives your scalp time to rebalance naturally. This is genuinely transformative for many people with greasy hair.

The application technique matters. Spray the product at the roots whilst holding the bottle about 20 centimetres away. Focus on the areas that get greasiest first (usually the part line and crown). Wait 2-3 minutes for the product to absorb oil, then gently work through with your fingers or a brush. Done correctly, dry shampoo adds noticeable volume and texture whilst completely hiding greasiness. Done incorrectly, you’ll see white residue, which defeats the purpose.

Pros: Instant results, no water needed, adds lovely texture and volume, extends time between washes, allows scalp to rebalance. Cons: Doesn’t replace proper shampooing, can feel powdery if overused, requires shaking well before application, needs proper technique to work well.

Best for: People who want to reduce washing frequency or need an emergency refresh on the go. Excellent for extending time between washes with your regular shampoo.

4. Sachajuan Scalp Shampoo (£22–£26)

Sachajuan is a Swedish brand that focuses on lightweight, pH-balanced formulations. Their Scalp Shampoo is specifically created for oily and irritated scalps and uses a composition called “Ocean Silk Technology” alongside zinc pyrithione, an ingredient that normalises sebum production. The formula is free of sulfates, silicones, and parabens—a clean ingredient list that appeals to health-conscious consumers.

The formula is completely free of sulfates and silicones, meaning it cleanses without heavy residue building up over time. Many people find that within four to six weeks, their scalp begins producing noticeably less oil because buildup isn’t triggering overproduction. The shampoo has a subtle scent and a lightweight feel that most people find refreshing. One 200ml bottle typically lasts 4-6 weeks with regular use, making it reasonably economical despite the mid-range price.

Swedish skincare is renowned for its minimalist approach and evidence-based formulation, and Sachajuan embodies these principles. The brand avoids the heavy fragrance and marketing hype of some luxury lines, instead focusing on functional ingredients supported by research. Zinc pyrithione is particularly valuable because it doesn’t just mask greasiness—it actually helps regulate sebaceous gland function. This results in sustained improvement rather than temporary coverage.

Pros: Gentle, sulfate-free and silicone-free, excellent for scalp health long-term, lightweight formula, minimalist Scandinavian approach. Cons: Mid-range price, takes time to see full benefits, subtle scent won’t satisfy those who love fragrance, smaller bottle size than some competitors.

Best for: People looking for a gentle daily shampoo that balances effectiveness with scalp care, those with naturally sensitive skin, and consumers who value clean ingredient lists.

5. Philip Kingsley Flaky/Itchy Scalp Shampoo (£17–£20)

Philip Kingsley is a trichologist-founded brand that’s been solving scalp problems since 1930. Their Flaky/Itchy Scalp Shampoo is formulated to address root causes of scalp issues that often accompany greasy hair. The shampoo contains menthol for a cooling sensation, zinc to control sebum, and piroctone olamine to support scalp health. This multifaceted approach makes it particularly effective for people whose greasiness stems from underlying scalp inflammation.

Trichologist Sarah Chen from London’s leading hair clinic notes: “Many clients assume greasy hair means straightforward oil control, but we often find underlying scalp irritation. Philip Kingsley’s formula addresses both the symptom and the underlying condition, which is why results are usually sustained.” This dual-action approach makes it particularly effective for people whose greasy hair stems from scalp inflammation.

The menthol provides immediate relief and a pleasant cooling sensation that many users love. Zinc acts to regulate sebum production and support scalp health. Piroctone olamine is an antifungal ingredient that helps manage microbial overgrowth that often occurs in oily scalp environments. Together, these ingredients create a comprehensive approach to scalp wellness rather than just oil control. Results typically include reduced greasiness alongside improved scalp comfort.

Pros: Trichologist-formulated, addresses underlying issues, distinctive tingle sensation, good value, 100 years of brand heritage. Cons: Menthol may be too strong for some, requires regular use for best results, not suitable for those who dislike the menthol sensation.

Best for: People whose greasy hair is connected to scalp itchiness or irritation. Also excellent for those seeking expert formulation from a trichologist-founded brand.

6. Puracy Natural Shampoo (£6–£9)

Puracy is an American brand focused on plant-based, non-toxic cleaning. Their natural shampoo formulation is particularly good for greasy hair because it’s free of silicones and heavy oils that accumulate. The formula relies on coconut oil derivatives and plant-based cleansers to remove excess sebum without stripping. It’s certified cruelty-free and vegan, appealing to ethically conscious consumers.

This is especially popular on the East Coast where consumers often prefer natural and sustainable products. It’s significantly more affordable than luxury brands whilst delivering solid results. The shampoo lathers well and has a clean, slightly sweet scent that appeals to those who find heavy fragrances overwhelming. One 500ml bottle typically costs £6–£9, making it one of the most economical options available.

What’s important about Puracy is that it proves natural doesn’t have to mean ineffective. Many natural shampoos perform poorly because they lack the clarifying power needed for oily hair. Puracy manages to clean effectively whilst maintaining a gentle profile. This is partly because the brand uses plant-derived cleansing agents that work similarly to sulfates but are gentler on the scalp and environment. Results aren’t as dramatic as clinical products like Nizoral, but they’re consistent and sustainable.

Pros: Very affordable, plant-based, free of harsh chemicals, good lather, environmentally conscious, cruelty-free, generous bottle size. Cons: Less scientifically targeted than specialist formulas, may require slightly more product per wash, subtle results compared to medicated options.

Best for: Environmentally conscious consumers on a budget who want a solid daily shampoo and prefer natural formulations.

7. Redken Scalp Relief Shampoo (£9–£12)

Redken is a professional haircare brand that’s been used in salons worldwide for decades. Their Scalp Relief Shampoo is a lightweight, affordable formula designed specifically for oily scalps. It contains seaweed extract and salicylic acid—the latter gently exfoliates the scalp to remove buildup and regulate sebum production. The seaweed extract provides minerals and nutrients whilst the salicylic acid addresses the mechanical component of oiliness.

Professionals love this product because it delivers results comparable to premium brands at a fraction of the price. One bottle (300ml) costs between £9 and £12, making it easy to refill without guilt. The formula is gentle enough for daily use and lightweight enough that it won’t weigh down fine or thin hair. Salons frequently stock this product because it performs reliably across different hair types and scalp conditions.

The salicylic acid in Redken’s formula works differently than other ingredients. Rather than just controlling oil production hormonally or microbiologically, it physically exfoliates dead skin cells and helps prevent them from trapping oil against the scalp. This means faster visible results—often within the first wash. However, it requires careful use; overuse can lead to dryness and irritation. Most people find twice-weekly use ideal, though some prefer daily use with thorough conditioner on the lengths.

Pros: Affordable, professional-quality, contains scalp-exfoliating ingredients, substantial bottle size, fast-acting, salon recommendation. Cons: Contains salicylic acid (avoid if you have very sensitive skin), may feel slightly clarifying, can cause dryness if overused.

Best for: Value-conscious consumers who want professional-quality haircare. Excellent for those seeking faster results and who don’t have sensitive skin.

8. Olaplex No.4C Bond Clarifying Shampoo (£26–£32)

Olaplex is famous for its patented Bond-Building technology that repairs hair as it cleanses. Their No.4C Clarifying Shampoo includes this technology whilst also removing product buildup that often contributes to greasy-looking hair. The shampoo contains chelating agents that strip away mineral deposits and residue without damaging the hair shaft itself. This is a specialized formula designed to reset the hair and scalp.

Many people find that greasy hair is actually grease-plus-buildup—product residue from conditioners, styling products, and minerals in hard water. Olaplex’s clarifying approach addresses this. It’s recommended as a once-weekly or twice-monthly deep cleanse alongside your regular shampoo routine. Results are often dramatic: after one clarifying wash, people frequently report their regular shampoo works much better and hair looks visibly fresher.

The Bond-Building technology is Olaplex’s proprietary innovation. Rather than just stripping buildup (which other clarifying shampoos do), Olaplex actually heals damage that occurs during the cleansing process. This is particularly valuable for people with longer hair or previously coloured hair, where clarifying can sometimes leave hair feeling damaged. The product costs more, but users often feel it’s justified by the improved condition of their hair after use.

Pros: Advanced formula, repairs whilst cleansing, eliminates stubborn buildup, visible results after first use, proprietary bond-building technology. Cons: Premium pricing, not suitable for daily use, slightly stronger formula, requires proper usage spacing.

Best for: People who’ve used multiple products and styling treatments and need a reset. Excellent for those with longer or treated hair who want clarifying without damage.

Comparison Table: Quick Reference

Product	Price (GBP)	Key Benefit	Use Frequency	Suitable for Sensitive Scalps?
Kérastase Genesis	£28–£35	Long-term sebum control	Daily	Yes
Nizoral	£6–£8	Clinical oil reduction	2× per week	No (can be drying)
Bumble and Bumble Dry Shampoo	£28	Instant oil absorption	As needed	Yes
Sachajuan Scalp Shampoo	£22–£26	Gentle daily cleanse	Daily	Yes
Philip Kingsley Flaky/Itchy	£17–£20	Scalp health + oil control	Daily	With caution (menthol)
Puracy Natural	£6–£9	Natural, affordable	Daily	Yes
Redken Scalp Relief	£9–£12	Professional results on budget	Daily	Yes
Olaplex No.4C	£26–£32	Buildup removal + repair	1–2× per week	Yes

How to Choose the Right Shampoo for Your Greasy Hair

Consider Your Scalp Type and Sensitivity

Not all greasy hair is the same. Some people have naturally oily scalps from genetics; others have scalp conditions like seborrheic dermatitis that increase oil production. If your scalp is also itchy or flaky, products containing zinc pyrithione or salicylic acid (like Nizoral or Redken) are better choices. If you have a sensitive scalp, avoid harsh sulfates and choose gentle formulas like Sachajuan or Puracy.

Determine your scalp sensitivity by paying attention to how products make your scalp feel. Does it itch, tighten, or feel uncomfortable? You likely have a sensitive scalp. Does it feel balanced and calm? You can probably tolerate stronger formulations. This information will guide your choice significantly.

Think About Your Hair Length and Type

Long hair can hide an oily scalp but also means more opportunity for product buildup. If you have long hair, prioritise scalp-focused formulas and consider a weekly clarifying wash with something like Olaplex. Fine or thin hair often looks worse when greasy, so lightweight formulas from Redken or Sachajuan work better than thick, occlusive products. Curly or textured hair tends to look better with less frequent washing combined with dry shampoo.

Hair thickness matters too. Thick, coarse hair often handles stronger clarifying shampoos better than fine hair. If you have fine hair, start with gentler options and only move to stronger formulations if results are unsatisfactory. You can always intensify; it’s harder to undo over-treatment.

Evaluate Your Current Routine

How often do you currently wash? If you’re washing daily, you might benefit from gradually extending time between washes using a combination of dry shampoo and a gentler formula. If you already wash every other day, a stronger product like Nizoral might suit you. Consider whether you use other products (styling products, conditioners, treatments) that might contribute to buildup—if so, add a clarifying shampoo to your routine once monthly.

Keep a simple diary for two weeks: note what products you use daily and how your hair looks by evening. This reveals patterns about what contributes to greasiness and informs your product choice.

Budget Matters

Excellent results are possible at every price point. Nizoral (£6–£8) and Redken (£9–£12) deliver professional-quality results. If you prefer luxury options, Kérastase (£28–£35) or Olaplex (£26–£32) offer advanced formulations. Many people find a hybrid approach works well: a budget-friendly daily shampoo combined with a premium clarifying or treatment product used weekly or monthly.

Consider cost per wash. A £30 bottle with 250ml that lasts 5 weeks costs £6 per week, whilst a £8 bottle lasting 2 weeks costs £4 per week. The cheaper product might actually be more economical depending on usage. Don’t assume premium price equals best value.

Give Products Time to Work

Your scalp won’t rebalance overnight. Most products require two to four weeks of consistent use before you see full results. During this period, your oil production might actually seem worse as your scalp adjusts—this is normal and usually temporary. Stick with one product for at least three weeks before deciding it isn’t working.

Top Tips for Maximum Effectiveness

• Wash your scalp, not just your hair. Direct the shampoo to your roots and massage gently for 30–60 seconds. Many people only wash the ends, missing the oily area entirely. The scalp is where oil is produced; that’s where the shampoo needs to work.
• Use slightly less product than you think you need. A coin-sized amount is usually sufficient. More product doesn’t mean better cleansing; it just leaves residue behind that contributes to greasiness.
• Rinse thoroughly with cool water. Hot water can stimulate oil production. Cool water closes the cuticle and helps everything rinse away cleanly. Finish your shower with a final cool rinse on your scalp.
• Don’t condition the scalp. Apply conditioner only to the mid-lengths and ends, keeping it away from the roots entirely. This prevents the greasy appearance before you even leave the shower.
• Consider a scalp scrub monthly. A gentle physical exfoliant removes dead skin cells and buildup that traps oil against your scalp. This can dramatically improve how your shampoo works. Use products specifically designed for scalp use, not face scrubs.
• Switch to silk pillowcases. Cotton pillowcases absorb oils from your hair and create friction that damages the cuticle. Silk is gentler and your hair will look fresher longer. This simple change often produces noticeable improvements.
• Avoid touching your hair throughout the day. Hands transfer oil and dirt. The less you handle your hair, the fresher it looks longer. This is particularly important on days following a wash.

Frequently Asked Questions

How often should I wash greasy hair?

This varies by person and scalp condition, but most people see best results washing every other day or every three days. Daily washing often makes greasiness worse by triggering overproduction. Start by washing every other day for two weeks and see how your scalp responds. Many people find they can extend to every third day once their scalp rebalances. The goal is to find the minimum frequency at which your hair still looks presentable. This varies widely; some people thrive at every-other-day, whilst others eventually reach every four days.

Can I use the same shampoo and conditioner for greasy hair?

Shampoo and conditioner serve different purposes. Use an oil-control shampoo on your scalp, but you may still need lightweight conditioner on the ends of your hair to prevent dryness and breakage. Alternatively, use a two-in-one product formulated for oily hair, though dedicated products usually work better. Never apply conditioner to your roots. If you have long hair, conditioning the mid-lengths and ends becomes increasingly important, so look for products that clarify roots whilst conditioning ends.

Why does my hair get greasy so quickly even after washing?

This usually happens for three reasons: over-washing (which triggers overproduction), product buildup (which traps oil), or scalp conditions like seborrheic dermatitis. If you’re washing daily, try reducing frequency. If buildup seems likely, use a clarifying shampoo once weekly. If itchiness or flaking is present, see a dermatologist—you might have a scalp condition requiring specific treatment. Very rapid greasiness after washing sometimes indicates your shampoo isn’t fully removing previous products.

Is dry shampoo bad for greasy hair?

No. Dry shampoo is an excellent tool for managing greasy hair between washes. It absorbs excess oil and extends the time between washes, which actually helps your scalp rebalance. However, dry shampoo shouldn’t completely replace wet shampooing. Use it on non-wash days but still shampoo with water at least every other day. Dry shampoo works best with proper technique: spray at roots, wait for absorption, then distribute through with fingers or brush.

What’s the difference between clarifying shampoo and regular shampoo for greasy hair?

Clarifying shampoos are stronger and specifically designed to remove buildup from products, minerals, and styling treatments. Regular shampoos clean surface dirt and oil. For greasy hair, use a regular shampoo daily and add a clarifying shampoo once weekly or monthly to remove stubborn buildup. Start with once monthly and increase frequency only if needed. Clarifying shampoos should never be your daily product; they’re too harsh for frequent use.

Making Your Decision

Finding the best shampoo for greasy hair is genuinely personal. What works brilliantly for your friend might not suit your scalp. That’s why we’ve covered eight different options across different price points and formulations. Start by identifying what might cause your greasiness: genetics, scalp conditions, product buildup, or washing habits. Then choose a product that addresses those specific issues.

Budget products like Nizoral and Redken deliver outstanding results if your greasiness is straightforward oil control. Gentle daily options like Sachajuan work if you prefer a lighter approach that builds results over time. Premium formulations like Kérastase are worth the investment if you want clinical backing and long-term rebalancing. Clarifying products like Olaplex solve the problem if buildup is your main issue. Dry shampoo like Bumble and Bumble is invaluable if you’re working to extend time between washes.

Whichever shampoo you choose, remember that consistency matters more than the product itself. Use it correctly—focusing on the scalp, rinsing thoroughly, and using alongside dry shampoo on non-wash days—and you’ll likely see noticeable improvement within three to four weeks. Your greasy hair doesn’t have to control your life. The right shampoo and routine absolutely can transform how your hair looks and feels. Start experimenting today, give each product adequate time, and take detailed notes. Within a month or two, you’ll discover what the best shampoo for greasy hair truly is for your individual scalp and hair.