If your hair feels thin or lacks volume, the right thickening shampoo can help add fullness and strength.
After testing dozens of formulas and reviewing real customer feedback, we’ve picked the best options for 2025.
Whether your hair is fine, oily, dry, or color-treated, there’s a shampoo here that can give it a thicker, healthier look.
Table of content
Best thickening shampoo: Our top picks
- Best overall: Scandinavian Biolabs Hair Strength Shampoo
- Best budget: Joon Saffron Rose Shampoo
- Best for hair growth: Kérastase Densifique Bain Densité Shampoo
- Best for oily hair: Head & Shoulders Volume Boost Anti-Dandruff Shampoo
- Best for dry hair: R+Co Biotin Thickening Shampoo
- Best for damaged hair: Bumble and Bumble Thickening Volume Shampoo
- Best for curly hair: OGX Thick & Full + Biotin & Collagen Extra Strength Volumizing Shampoo
1. Best overall: Scandinavian Biolabs Hair Strength Shampoo
Key ingredients: Capilia Longa®, amino acid complex, niacinamide
Size: 8.5 oz
Sulfate free?: Yes
Hair type: All, especially thinning hair
This shampoo is designed to support hair strength and scalp health. Capilia Longa® helps reduce hair loss, while amino acids and niacinamide reinforce strands. It cleans without stripping moisture and has a refreshing eucalyptus scent.
Unlike some thickening shampoos that just coat the hair, this one works over time to improve density. It’s sulfate-free, making it gentle on the scalp and suitable for regular use.
It doesn’t provide instant volume, so patience is needed for results. The thinner consistency might also take some getting used to, but its lightweight feel makes it easy to rinse.
2. Best budget: Joon Saffron Rose Shampoo
Key ingredients: Saffron, rose water, pistachio oil
Size: 10 oz
Sulfate free?: Yes
Hair type: Fine to normal
Affordable and lightweight, this shampoo adds volume without buildup. Saffron and pistachio oil strengthen strands, while rose water provides hydration. It cleans well, smells great, and won’t weigh hair down.
It’s ideal for fine hair that needs a boost but not excess moisture. The formula rinses easily, leaving hair soft and manageable.
It may not be hydrating enough for very dry or damaged hair. If that’s a concern, pair it with a richer conditioner.
3. Best for hair growth: Kérastase Densifique Bain Densité Shampoo
Key ingredients: Hyaluronic acid, gluco-peptides, ceramides
Size: 8.5 oz
Sulfate free?: No
Hair type: Thinning, fine, or aging hair
This salon-quality shampoo strengthens thinning hair and enhances fullness. Hyaluronic acid hydrates, gluco-peptides reinforce, and ceramides help smooth and protect strands.
Unlike volumizing shampoos that give temporary lift, this one supports long-term density. Hair feels stronger and softer with continued use.
It’s not sulfate-free, so color-treated hair might need extra care. It’s also on the pricier side, but for those looking to improve hair health, it’s a solid investment.
4. Best for oily hair: Head & Shoulders Volume Boost Anti-Dandruff Shampoo
Key ingredients: Pyrithione zinc, citrus extracts
Size: 12.8 oz
Sulfate free?: No
Hair type: Oily, fine, dandruff-prone
This shampoo cuts through oil and buildup while adding light volume. Pyrithione zinc keeps the scalp balanced, while citrus extracts help control grease.
It’s a good option for those who want fresher, fuller-looking hair without heavy residue. It lathers well, cleans thoroughly, and works for daily use.
It’s not very hydrating, so dry ends may need a conditioner. The scent is slightly medicinal, but it fades quickly after rinsing.
5. Best for dry hair: R+Co Biotin Thickening Shampoo
Key ingredients: Biotin, pro-vitamin B5, coconut oil
Size: 8.5 oz
Sulfate free?: Yes
Hair type: Dry, brittle, or fine
This shampoo balances thickening and hydration, making it great for dry, thinning hair. Biotin strengthens, while pro-vitamin B5 and coconut oil help lock in moisture.
It leaves hair soft and full without making it feel heavy. Ideal for heat-damaged or color-treated hair that needs both nourishment and volume.
It might be too rich for oily hair, so those prone to grease should use it every other wash. Otherwise, it’s a great pick for strengthening and softening fragile strands.
6. Best for damaged hair: Bumble and Bumble Thickening Volume Shampoo
Key ingredients: Panthenol, wheat protein, aloe vera
Size: 8.5 oz
Sulfate free?: No
Hair type: Weak, thinning, or over-processed hair
This shampoo is great for hair that’s thinning due to heat, coloring, or chemical treatments. Panthenol and wheat protein help reinforce weak strands, while aloe vera soothes the scalp.
It provides a noticeable thickening effect without making hair stiff or dry. The formula is lightweight but still leaves hair feeling fuller and healthier.
Since it contains sulfates, it may not be ideal for color-treated hair. Those with very dry hair may need a hydrating conditioner to balance it out.
7. Best for shine: K18 Peptide Prep Color-Safe Detox Clarifying Shampoo
Key ingredients: Peptides, charcoal, salicylic acid
Size: 8.5 oz
Sulfate free?: Yes
Hair type: All, especially dull or lifeless hair
This clarifying shampoo removes buildup while maintaining moisture. Peptides help strengthen hair, charcoal absorbs excess oil, and salicylic acid gently exfoliates the scalp.
It’s ideal for those whose hair looks flat due to product residue. After washing, hair feels lighter, looks shinier, and has more natural volume.
It’s a strong cleanser, so using it too often might be drying. Best used once or twice a week alongside a hydrating shampoo.
8. Best for curly hair: OGX Thick & Full + Biotin & Collagen Extra Strength Volumizing Shampoo
Key ingredients: Biotin, collagen, hydrolyzed wheat protein
Size: 13 oz
Sulfate free?: No
Hair type: Fine, curly, or wavy hair
Curly hair often needs volume without losing definition, and this shampoo delivers. Biotin and collagen add thickness, while wheat protein helps strengthen and shape curls.
It cleans well without stripping moisture, making it a good pick for curls that lack volume. Hair feels fuller, bouncier, and easier to style.
It contains sulfates, so it may not suit very dry curls. Using a conditioner or leave-in treatment can help maintain hydration.
9. Best natural formula: NatureLab Perfect Volume Shampoo
Key ingredients: Apple stem cells, rice protein, soy protein
Size: 11.5 oz
Sulfate free?: Yes
Hair type: Fine, limp, or thinning hair
This shampoo uses plant-based ingredients to add thickness without artificial additives. Apple stem cells support scalp health, while rice and soy protein help strengthen strands.
It’s lightweight but still provides noticeable volume. Hair feels fresh and clean, and the subtle citrus scent is a nice touch.
Because it’s sulfate-free, it doesn’t lather as much as traditional shampoos. Some may need to wash twice for a deep clean, but it’s a solid option for those avoiding harsh chemicals.
10. Best sulfate-free: Aveda Pure Abundance Volumizing Shampoo
Key ingredients: Kaolin clay, wheat protein, aloe
Size: 8.5 oz
Sulfate free?: Yes
Hair type: Fine or oily hair
For those looking to avoid sulfates, this shampoo provides volume naturally. Kaolin clay absorbs excess oil, while wheat protein adds thickness and aloe soothes the scalp.
It’s a great choice for fine hair that tends to go flat quickly. The formula lifts roots without making hair feel dry or brittle.
The herbal scent is strong and may not be for everyone. It also works best with a lightweight conditioner, as it can leave some hair types feeling slightly dry.
11. Best strengthening: Garnier Fullness Repair Shampoo
Key ingredients: Citric acid, polypeptides, sunflower seed oil
Size: 12 oz
Sulfate free?: No
Hair type: Weak, thinning, or breakage-prone hair
This shampoo is designed for hair that needs both volume and repair. Polypeptides help strengthen strands, while citric acid seals the cuticle to reduce breakage. Sunflower seed oil adds light hydration without making hair greasy.
It’s a good pick for thinning hair that feels fragile. It leaves hair feeling stronger and more resilient after a few washes, making it less prone to snapping.
Because it contains sulfates, it may not be the best choice for color-treated hair. However, for anyone dealing with weak or damaged hair, it’s a budget-friendly option that delivers real results.
12. Best lightweight formula: Briogeo Destined For Density Caffeine + Biotin Peptide Density Shampoo
Key ingredients: Caffeine, biotin, peptides
Size: 8 oz
Sulfate free?: Yes
Hair type: Fine or thinning hair
This shampoo focuses on scalp health, using caffeine and biotin to promote thicker, fuller-looking hair. The lightweight formula cleanses without leaving residue, making it great for those who want volume without heaviness.
It works well for anyone looking to improve hair density over time. The peptides nourish strands, and the biotin supports stronger growth. Hair feels airy and full after washing.
Some users with sensitive scalps may find the formula a bit stimulating. If irritation occurs, it’s best to use it every other wash instead of daily.
13. Best for color-treated hair: Avalon Organics Thickening Shampoo
Key ingredients: Biotin, saw palmetto, vitamin E
Size: 11 oz
Sulfate free?: Yes
Hair type: Color-treated, fine, or thinning hair
Color-treated hair needs extra care, and this shampoo thickens while keeping hair safe from fading. Biotin and saw palmetto work to strengthen strands, while vitamin E helps maintain shine and moisture.
It’s a gentle formula that cleans well without stripping color. The plant-based ingredients make it a good choice for those avoiding synthetic additives.
Since it’s sulfate-free, it doesn’t lather as much as traditional shampoos. However, it still provides a thorough clean and leaves hair looking fuller.
14. Best for fine hair: ARROJO Gentle Sulfate Free Shampoo
Key ingredients: Vitamin B5, coconut oil, avocado oil
Size: 8.5 oz
Sulfate-free?: Yes
Hair type: Fine or sensitive hair
This mild shampoo adds volume without irritating the scalp. Vitamin B5 strengthens strands, while coconut and avocado oil provide hydration without heaviness.
It’s great for fine hair that gets weighed down easily. Hair feels soft, clean, and slightly thicker after each wash.
The formula is thinner than most shampoos, so it may take some getting used to. It’s also lightly scented, making it a good choice for those sensitive to strong fragrances.
15. Best clarifying shampoo: Oribe Shampoo for Magnificent Volume
Key ingredients: Polymers, hydrolyzed vegetable protein
Size: 8.5 oz
Sulfate free?: Yes
Hair type: Fine or oily hair
For hair that feels weighed down by product buildup, this shampoo provides a deep clean while adding volume. Polymers help expand hair strands, while hydrolyzed vegetable protein strengthens and smooths.
It’s a good option for those who use a lot of styling products. It lifts hair at the roots and leaves it feeling refreshed and bouncy.
It’s on the pricier side, but a little goes a long way. Best used once or twice a week to maintain volume without over-drying.
As your leading source for hair health information over the past 4 years, we never compromise on accuracy. When it comes to your health, you deserve information you can truly rely on - and earning your trust is our top priority.
Here's how Scandinavian Biolabs ensures every piece of content meets the highest standards of accuracy and integrity:
- Credentialed Experts: Our reviewers are actively practicing doctors and medical researchers
- Stringent Reviews: Content undergoes rigorous editing by subject specialists and review by a practicing doctor.
- Evidence-Based: We rely on well-established research from trusted scientific sources like peer-reviewed journals and health authorities.
- Full Transparency: Our editorial standards, writer credentials, reviewer credentials, correction process, and funding are all publicly documented.
- Independent Voice: While we do promote products, we operate in a vacuum to business operations. Our main goal is just an unwavering commitment to providing medically-sound guidance.
You can count on Scandinavian Biolabs to consistently deliver the trustworthy health information you deserve. Read our Editorial Standards.
How we tested and reviewed the shampoos
After testing 78 different shampoos, we narrowed it down to the 15 best options based on real-world results. We looked at formulas, performance, and user experience to find shampoos that actually help hair look and feel thicker.
Each shampoo was tested on different hair types, including fine, thinning, dry, and oily hair. We also read hundreds of customer reviews to compare lab results with real experiences.
If a shampoo left hair too greasy, dried it out, or didn't show any visible thickening effects, it didn’t make the list.
We focused on key ingredients like biotin, keratin, and peptides, which support hair strength and density. Sulfate-free formulas were also evaluated for those with color-treated or sensitive hair. Every shampoo here passed the test for effectiveness and real, noticeable volume.
How to choose the best thickening shampoo for your hair type
Not all thickening shampoos work the same way. Choosing the right one depends on your hair’s texture, condition, and what you need most from your shampoo.
- Fine or limp hair – Look for lightweight, volumizing formulas that won’t weigh hair down. Avoid heavy oils or silicone-based products.
- Oily hair – A clarifying shampoo with ingredients like charcoal, citrus extracts, or salicylic acid can help remove excess oil and lift roots.
- Dry or damaged hair – Choose a formula with hydrating ingredients like coconut oil, aloe vera, or glycerin to prevent further breakage.
- Color-treated hair – A sulfate-free shampoo will be gentler and help preserve color while still adding thickness.
- Curly or wavy hair – A thickening shampoo with moisture-locking ingredients like shea butter or collagen can enhance curls without making them frizzy.
- Thinning or aging hair – Look for shampoos with biotin, caffeine, or peptides, which may help strengthen hair and improve scalp health over time.
Do thickening shampoos really work?
Yes, thickening shampoos can make hair look and feel fuller, but they don’t change the actual number of hair strands you have. They work by coating hair strands, improving scalp health, and reducing breakage, which helps hair maintain its natural density.
Many thickening shampoos contain ingredients like biotin, keratin, and polymers, which temporarily plump up each strand, making hair appear thicker. Some also help cleanse excess oil and buildup that can weigh hair down, giving a more lifted, voluminous look.
However, they won’t magically grow new hair. If you’re experiencing significant thinning, it’s best to combine a thickening shampoo with a healthy hair routine, scalp treatments, and possibly professional advice from a dermatologist.
Key ingredients to look for in a thickening shampoo
Not all shampoos are created equal. The best thickening shampoos contain ingredients that help strengthen strands, improve scalp health, and add fullness without weighing hair down. Here are some key ingredients to watch for:
- Capilia Longa – A plant-based extract that has been shown to reduce hair loss and improve density over time.
- Biotin – Supports keratin production, which is essential for strong, thick hair.
- Keratin – Reinforces hair structure, helping to prevent breakage and thinning.
- Caffeine – Stimulates the scalp and may encourage better hair growth.
- Hyaluronic acid – Hydrates hair and plumps up individual strands for a fuller look.
- Collagen & peptides – Help strengthen and add volume to fine or weak hair.
- Salicylic acid & charcoal – Clear scalp buildup, allowing hair to appear more voluminous.
- Niacinamide – Improves blood circulation to the scalp, promoting healthier, thicker-looking hair.
Additional tips to make your hair look thicker
A good shampoo helps, but other habits can also improve the look of your hair. Here are a few simple ways to add more volume and fullness:
- Use a lightweight conditioner – Avoid heavy, oil-based conditioners that can weigh hair down.
- Dry hair upside down – This helps lift the roots and create instant volume.
- Try a volumizing mousse or spray – These products can give hair more body without making it greasy.
- Exfoliate your scalp – Removing buildup helps keep hair follicles healthy and unclogged.
- Choose the right haircut – Layers or blunt cuts can make hair appear thicker.
- Avoid excessive heat styling – Too much heat can weaken strands, leading to breakage.
- Eat a nutrient-rich diet – Protein, omega-3s, and vitamins like biotin all support stronger, fuller hair.
Conclusion
Finding the right thickening shampoo can make a big difference in how your hair looks and feels. The best ones don’t just add temporary volume—they strengthen hair, support scalp health, and improve density over time.
If you have fine, limp, or thinning hair, choosing the right formula based on your hair type and needs is key. Ingredients like biotin, caffeine, and Capilia Longa can help, and pairing your shampoo with a lightweight conditioner and good styling habits will enhance the results.
Thicker-looking hair isn’t just about the products you use—it’s also about how you care for your hair daily. Small changes in your routine can go a long way in making hair appear fuller and healthier.
FAQs
Can thickening shampoos actually regrow hair?
No, thickening shampoos won’t grow new hair, but they can help improve hair density by strengthening existing strands, reducing breakage, and promoting a healthier scalp.
How often should I use a thickening shampoo?
Most thickening shampoos can be used daily or every other day, depending on your hair type. If it’s a clarifying formula, once or twice a week may be enough.
Can I use a thickening shampoo with a conditioner?
Yes, but choose a lightweight, volumizing conditioner. Heavy, oil-based conditioners can counteract the thickening effects by making hair flat.
What’s the difference between thickening and volumizing shampoos?
Thickening shampoos work by coating and reinforcing each strand, making hair feel denser. Volumizing shampoos focus on lifting the roots to create a fuller look.
Will thickening shampoos make my hair greasy or dry?
It depends on the formula. Some contain hydrating ingredients to keep hair soft, while others are clarifying and may be drying if overused. If your scalp feels greasy or too dry, adjust how often you wash your hair.
