Strength & Volume Shampoo
Strength & Volume Shampoo
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COSMOS
Fine hair doesn't need gentle handling. It needs structure.
Hair that looks flat usually isn't thinner in number it's thinner in diameter. Each strand loses width as the keratin structure degrades through washing, weather, friction, and time. Less diameter across thousands of strands reads as less hair.
The Strength & Volume Shampoo addresses that directly. Hydrolysed keratin the structural protein hair is made of — fills micro-damage along each strand, restoring diameter and resilience. Rosemary leaf extract and panthenol condition the scalp while the sulfoacetate surfactant base cleans without the stripping that harsh sulphates cause.
This is the shampoo for men who want to keep what they have and make the most of it. Hair that feels stronger and fuller from the first wash, and holds its style through the day.
How to Use
Every Wash Day
Wet hair thoroughly with warm water.
Apply a coin-sized amount and massage into the scalp for 60 seconds focus on the crown and hairline.
Work the lather through the lengths of the hair.
Rinse thoroughly.
Follow with Volume Boost Conditioner on the lengths avoid the scalp to maintain volume at the roots.
Key Ingredients
Hydrolysed Keratin
The structural protein your hair is made of. Fills micro-damage along the shaft, restoring diameter, strength, and resilience to weakened strands.
Rosemary Leaf Extract
A traditional scalp botanical, used in hair preparations for centuries. Conditions the skin your hair grows from, which most shampoos strip instead.
Sulfoacetate Cleansing Base
Sodium Lauryl Sulfoacetate is a milder surfactant than the sulphates most shampoos use. It cleans thoroughly without stripping the scalp barrier.
Panthenol (Pro-Vitamin B5)
Adds moisture to the hair shaft and scalp. Prevents the brittleness that makes fine hair break before it reaches its full length.
Full Ingredient List — INCI
Aqua, Sodium Lauryl Sulfoacetate, Cocamidopropyl Betaine, Hydrolyzed Keratin, Rosmarinus Officinalis (Rosemary) Leaf Extract, Glycerin, Panthenol, Citric Acid, Guar Hydroxypropyltrimonium Chloride, Sodium Benzoate, Potassium Sorbate.
COSMOS NATURAL certified by ECOCERT Greenlife
Questions
How often should I use this?
Every wash day typically 3–5 times per week depending on your hair type and activity level. Daily use is fine; the sulfoacetate base won't over-strip the scalp the way harsh sulphates do.
Will this make my hair look thicker?
Keratin strengthens and adds diameter to existing strands, so hair looks and feels fuller because each hair has more body not because there are more of them. For a fuller routine, combine with the Rosemary Scalp Oil and Scalp Scrub.
Can I use this with styling products?
Yes keratin-strengthened hair holds styles better because each strand has more structure. Apply your styling product to towel-dried hair after washing.
How long does one bottle last?
At 3–5 washes per week, the 390ml bottle lasts approximately 8–10 weeks.
Stronger Hair Starts at the Scalp.
Pair with the full Reign collection for the complete hair routine.
Explore Reign →
