KEVIN.MURPHY THICK.AGAIN lightweight leave-in volumizing treatment 100 ml — peptide thickening & heat protection

KEVIN.MURPHY THICK.AGAIN is a lightweight leave-in hair treatment designed to thicken fine or thinning men’s hair, add body and bounce, and protect strands from heat styling.

This concentrated 100 ml formula targets weakened, fine or aging hair with a peptide-based thickening approach that builds visible body without weighing hair down. Absorbable and non-greasy, THICK.AGAIN works as a daily leave-in to support hair density appearance while offering heat protection up to 216°C (420°F). It’s free from sulphates and parabens and fits into salon-quality and at-home routines for men seeking a fuller look without heavy styling products.

How does THICK.AGAIN create the appearance of thicker hair?

THICK.AGAIN uses ingredients inspired by eyelash-thickening technology to increase strand diameter and boost fullness at the root and along the shaft. Results are cosmetic—improving look and feel—by coating and plumping each fibre rather than changing hair growth cycles.

• Peptide-based complex that builds micro-thickness on individual hairs.
• Lightweight polymers that add body without stiffness or residue.
• Fast-absorbing leave-in formula suitable for daily use.

Can I use it before heat styling and will it protect hair?

Yes — THICK.AGAIN provides heat protection up to 216°C (420°F), making it a practical prep step before blow-drying or using hot tools. Because it’s a leave-in product, it forms a protective layer while still allowing hair to move naturally and maintain a soft texture.

• Heat protection rating up to 216°C / 420°F for thermal styling peace of mind.
• Non-greasy finish that won’t flatten hair volume during styling.
• Pairs well with blow-dry techniques to enhance root lift and longevity.

Is THICK.AGAIN suitable for sensitive scalps or daily use?

The formula is formulated without sulphates and parabens and is cruelty-free, making it a gentle option for many users. It’s intended as a daily leave-in; as with any topical treatment, test on a small area if you have known scalp sensitivities.

• Sulphate- and paraben-free for a milder cleansing and care routine.
• Designed for fine, thinning, and aging hair textures common in men.
• Non-irritating formulation for regular application when tolerated.

How do I add THICK.AGAIN to my grooming routine?

Incorporate THICK.AGAIN after towel-drying: apply a few drops to roots and lengths, distribute evenly, then style as usual. Use more sparingly on very fine hair and increase if you need extra body; it layers well under styling creams or light waxes.

• Apply to damp hair for best absorption and even coverage.
• Start with a small amount at the crown and work through to ends.
• Finish with blow-drying for added volume or air-dry for a natural finish.

Who is this for: THICK.AGAIN is aimed at men with fine, thinning, or aging hair who want a salon-grade, non-greasy leave-in that increases visible thickness and protects during heat styling. If you prefer lightweight products that add body without stiffness, or you need a daily boost for styling and texture, this concentrated 100 ml treatment is formulated to fit into both professional and at-home regimens.

Ingredients

Water, glycerin, dimethicone, keratin, tocopherol (vitamin E), panthenol, peptides, fragrance.