Keratin proteins in hair conditioning
Cosmetic science reviews describe hydrolyzed keratin as a conditioning agent that can help improve hair strength, elasticity, and manageability in rinse-off conditioner formulations.
About this product
Formulated with hydrolyzed keratin and botanical extracts, this volumizing conditioner helps fortify hair, reduce the appearance of breakage, and boost body without heaviness.
Why you’ll love it: Helps smooth and detangle hair without weighing it down Protects against the appearance of breakage and frizz. Enriched with hydrolyzed keratin to help strengthen and fortify strands Formulated with nourishing botanical extracts for soft, full-bodied hair.
Suggested use
About monthlees
The supplement industry is built on inflated pricing, confusing labels, and aggressive marketing.
Monthlees exists to fix that.
We believe:
- Supplements should be clinically dosed
- Pricing should be transparent
- Testing should be independent
- And customers shouldn't pay for influencer commissions or retail margins
Instead of hiding costs inside the product price, we use a simple membership model — so you pay what supplements actually cost to make.
Shipping & returns
• Shipping: Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days depending on your location.
• Returns: You may return or exchange products within 30 days of receiving your order. Items must be in original condition with proof of purchase.
If your item is defective or damaged due to manufacturing issues, we’ll gladly replace it at no additional cost.
30 Day Money Back Guarantee
FDA Disclaimer
What's in Keratin Gentle Volume Conditioner?
- Ecocert COSMOS Natural certified
- 98% natural origin · 7% organic
- Hydrolyzed keratin · caffeine
- Organic rosemary · peppermint
- Vitamin E · sodium PCA · zinc PCA
- Organic chanterelle · nettle extracts
- Gluten free
- Peppermint · rosemary · tonka · sandalwood aroma
Supplement Facts
Keratin Gentle Volume Conditioner
Supplement Facts
Serving Size Use as needed per wash
Servings Per Container See package label
Amount Per Serving
% DV
Formula highlights
Natural origin
98%
Organic origin
7%
Hydrolyzed Keratin
strengthen · volume
Caffeine
scalp · body
Tocopherol
vitamin E
Sodium PCA
hydrate
Zinc PCA
scalp care
Full INCI ingredient list
Aqua/Water
—
Cantharellus Cibarius (Chanterelle) Extract➀
—
Cetearyl Alcohol
—
Distearoylethyl Dimonium Chloride
—
Glycerin
—
PCA Glyceryl Oleate
—
Sodium PCA
—
Urtica Dioica (Nettle) Leaf Extract➀
—
Zinc PCA
—
Tocopherol
—
Parfum/Fragrance
gourmand
Caffeine
—
Guar Hydroxypropyltrimonium Chloride
—
Benzyl Alcohol
—
Sodium Benzoate
—
Cocos Nucifera (Coconut) Oil➀
—
Persea Gratissima (Avocado) Oil➀
—
Prunus Amygdalus Dulcis (Sweet Almond) Oil➀
—
Potassium Sorbate
—
Mentha Piperita Oil➀
—
Hydrolyzed Keratin
—
Rosmarinus Officinalis Leaf Oil➀
—
Lactic Acid
—
Leuconostoc/Radish Root Ferment Filtrate
—
Menthol➁
—
Limonene➁
—
Camphor➁
—
Citrus Aurantium Bergamia Peel Oil
—
Pinene➁
—
➀ Ingredients from organic farming.
➁ Made using organic ingredients.
Other Ingredients: See full INCI list above. Contains hydrolyzed keratin and sweet almond oil.
Free of
- Gluten
- GMO ingredients
- Artificial colors
Diet friendly
- COSMOS Natural certified
- 98% natural origin
- Keratin · caffeine volume care
- Gluten free
- Recyclable packaging
Volume. Strength. Glow.
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Keratin fortification
Hydrolyzed keratin helps strengthen and fortify strands — smoothing and detangling while reducing the appearance of breakage for healthier-looking hair.
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Extra volume
Caffeine, guar conditioning, and zinc PCA support body and thickening without the heavy coat — ideal for boosting volume on all hair types.
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Scalp reactivation
Organic rosemary and peppermint oils, menthol, and caffeine help reactivate the scalp — paired with organic nettle and chanterelle extracts for botanical care.
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COSMOS Natural certified
98% natural origin, 7% organic — Ecocert COSMOS Natural certified, gluten free, with organic coconut, avocado, and sweet almond oils and recyclable packaging.
How it works
-
Step 1: Apply
Work through damp hair from mid-lengths to ends — the volumizing formula detangles and conditions without weighing down roots.
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Step 2: Fortify
Hydrolyzed keratin, caffeine, organic rosemary, and vitamin E help strengthen strands, reactivate the scalp, and reduce the appearance of breakage and frizz.
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Step 3: Rinse
Rinse thoroughly for soft, full-bodied hair with extra volume and renewed glow — thickening care suitable for all hair types.
Supplement facts
Formula breakdown — what each layer does
Hydrolyzed Keratin
strengthen
—
Caffeine
volume · scalp
—
Sodium PCA
hydrate
—
Zinc PCA
scalp care
—
Tocopherol
vitamin E
—
Topical hair care actives. 98% natural origin.
Cantharellus Cibarius (Chanterelle) Extract➀
botanical
organic
Urtica Dioica (Nettle) Leaf Extract➀
botanical
organic
Rosmarinus Officinalis Leaf Oil➀
rosemary
organic
Mentha Piperita Oil➀
peppermint
organic
Cocos Nucifera (Coconut) Oil➀
oil
organic
Persea Gratissima (Avocado) Oil➀
oil
organic
Prunus Amygdalus Dulcis (Sweet Almond) Oil➀
oil
organic
➀ Ingredients from organic farming. Contains sweet almond oil.
Aqua/Water
base
—
Cetearyl Alcohol
conditioner
—
Distearoylethyl Dimonium Chloride
conditioner
—
Glycerin
humectant
—
PCA Glyceryl Oleate
conditioner
—
Guar Hydroxypropyltrimonium Chloride
detangle
—
Parfum/Fragrance
aroma
peppermint · tonka
Benzyl Alcohol
preservative
—
Sodium Benzoate
preservative
—
Potassium Sorbate
preservative
—
Lactic Acid
pH adjuster
—
Leuconostoc/Radish Root Ferment Filtrate
preservative
natural
Menthol➁
—
Limonene➁
—
Camphor➁
—
Citrus Aurantium Bergamia Peel Oil
—
Pinene➁
—
➁ Made using organic ingredients. Gluten free. 7% organic origin.
Evidence-based ingredients
The science behind the ingredients
Keratin Gentle Volume Conditioner is COSMOS Natural certified with 98% natural origin and full INCI disclosure — hydrolyzed keratin, caffeine, and rosemary listed, not a mystery salon formula.
98%
Natural origin
COSMOS
Ecocert certified
Keratin
+ caffeine
Caffeine and hair follicle research
Research on topical caffeine in hair care explores its potential effects on hair follicle biology and scalp circulation — relevant to volumizing and scalp-reactivation positioning.
Rosemary oil in scalp and hair care
Botanical reviews discuss rosemary essential oil as a traditional scalp-care ingredient — supporting its use alongside keratin in volumizing conditioner formulas.
COSMOS Natural certification standard
The COSMOS standard defines requirements for natural and organic cosmetics — including ingredient origin, environmentally friendly processing, and responsible use of natural resources.
Compare volumizing conditioners
How Monthlees Keratin Volume Conditioner stacks up
Many volumizing conditioners hide actives behind proprietary blends. Ours lists hydrolyzed keratin, caffeine, rosemary, and vitamin E with full INCI disclosure and COSMOS Natural certification.
|
Product type
|
Volumizing conditioner
|
Strengthening shampoo
|
|---|---|---|
|
Key actives
|
Keratin + caffeine + rosemary
|
Betaine + wheat protein
|
|
Certification
|
Ecocert COSMOS Natural
|
Ecocert COSMOS Natural
|
|
Member pricing available
|
Yes — Monthlees members
|
Yes — Monthlees members
|
Insider access to the world's best labs & supplement manufacturers.
Membership allows us to sell products for a fraction of the typical industry retail price. Think of it as an insider access pass to the warehouses of the supplement industry.
Monthlees members don't pay for:
- Middlemen
- Marketing & influencer costs
- Retailer markups
- Distributor margins
Stop overpaying for salon keratin conditioners.
Premium keratin volumizing conditioners often cost $35–$55 at retail. Monthlees membership keeps COSMOS Natural certified volume care affordable for every wash.
| Treatment | Other guys | Monthlees |
|---|---|---|
| Keratin Volume Conditioner monthly supply One bottle — regular washes | $38.95 | $19.17 |
| Salon keratin conditioner Premium retail brands | $35–$55/bottle | COSMOS Natural certified |
| Drugstore volumizing conditioner Mass-market formulas | $10–$18/bottle | 98% natural origin |
Start your monthlees health journey with complete support
Your membership gives you access to better pricing, personalized guidance, and everything you need to build a healthy supplement & personal care routine that effortlessly fits your life.
- Unlock member pricing of 50-80% off on every product
- Get your personalized Starter Routine Kit
- Use flexible subscriptions to save on repeat orders
- Manage everything easily from your Monthlees account
- 30-day money back guarantee on all product purchases
- Automatic savings applied at checkout
- 100% flexible. Update, pause, or cancel anytime
Member trust
Confidence built into every order
From clear member pricing to flexible subscriptions and responsible product standards, Monthlees is built to help you shop with confidence — without inflated markups, hidden tiers, or checkout surprises.
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Transparent product pricing
Every product shows clear pricing for guests and members, so you can compare your savings before you buy.
-
Member savings applied automatically
When you’re signed in as a member, your eligible discounts are applied automatically at checkout.
-
Subscriptions that stay flexible. Cancel anytime.
Start, pause, skip, or adjust product subscriptions from your account — without hidden hoops or confusing rules.
Frequently asked questions
Everything you need to know about Monthlees member pricing, subscriptions, and how checkout works.
Will this weigh down fine or thin hair?
It's formulated for gentle volume without heaviness. Apply to mid-lengths and ends rather than the scalp — the keratin and botanical blend helps boost body and detangle without a flat, coated feel.
Should I pair it with Keratin Gentle Volume Shampoo?
Yes. Keratin Gentle Volume Conditioner is designed to pair with Keratin Gentle Volume Shampoo for a complete volume-enhancing routine — cleanse first, then condition mid-lengths and ends and rinse thoroughly.
What key actives are listed in the INCI?
The formula discloses hydrolyzed keratin, caffeine, tocopherol (vitamin E), sodium PCA, zinc PCA, organic rosemary leaf oil, organic peppermint oil, and organic nettle and chanterelle extracts — see the full INCI list on the product page. Contains sweet almond oil.
Why I created monthlees...
When I was 19 years old, I was diagnosed with a brain tumor. That experience forced me to start asking deeper questions about how the human body actually works.
Over the next 18 months, I immersed myself in studying health, nutrition, and neuroscience — eventually earning my degree in Neuroscience from Duke University. Along the way, I discovered something powerful: the body is incredibly resilient & inherently self-healing when it’s given the right support.
Strategic nutrition and supplementation became a major part of my own health journey. And over the last two decades, I’ve devoted my life to helping millions of people around the world take a more proactive role in their health.
That experience completely changed how I thought about health — and ultimately shaped the way Monthlees was built.
I created Monthlees because I was tired of seeing people pay premium prices for supplements that were under-dosed, over-marketed, and difficult to trust.
My goal is simple: build the kind of brand I would want for myself and my family — with better ingredients, transparent formulas, meaningful dosages, and a business model built on long-term trust.
— Chris Walker, Founder of Monthlees
