THORN & BERRY Hair Growth Serum for Thinning Hair — Lightweight DHT‑Blocking Scalp Treatment with Peptides & Biotin

THORN & BERRY Hair Growth Serum is a lightweight, peptide- and botanical-powered scalp treatment designed to support the look of thicker, fuller hair while helping balance the scalp.

This concentrated serum blends multi-peptides, biotin, topical caffeine and a botanical DHT-blocker complex (including saw palmetto and rosemary) to create a daily scalp treatment that targets the environment around hair follicles. The formula also contains hydrolyzed keratin, amino acids and moisturizing actives to strengthen brittle strands and reduce the appearance of shedding without greasy residue.

How does this serum support hair density and reduce visible thinning?

The serum combines peptide technology with targeted vitamins and plant extracts to fortify follicles and improve the look of hair density. Ingredients like Copper Tripeptide-1, Acetyl Tetrapeptide-3 and niacinamide help revitalize the scalp, while topical caffeine and biotin energize and support stronger strand structure.

• Peptide and niacinamide complex to promote a healthy scalp environment.
• Caffeine and biotin to help strengthen fragile hair and reduce breakage.
• Botanical blend (saw palmetto, rosemary) to support a DHT-managing routine.

Will the serum weigh down fine or limp hair?

No — the formulation is intentionally lightweight and fast-absorbing, designed for daily use on all hair types, including fine hair. Glycerin, panthenol and bisabolol provide hydration and soothing benefits without leaving an oily finish or buildup.

• Non-greasy texture absorbs quickly into scalp and roots.
• Hydrating agents improve manageability without heaviness.
• Suitable for daily application under styling products.

What active botanicals and repair ingredients are included?

The serum pairs restorative botanicals with protein-building and antioxidant ingredients to address weakness, environmental stress and scalp balance. Hydrolyzed keratin and amino acids help rebuild strand elasticity, while bakuchiol, astaxanthin and sea buckthorn offer antioxidant protection.

• Hydrolyzed keratin and amino acids for strand repair and resilience.
• Rosemary, peppermint, tea tree and nettle to nourish and calm the scalp.
• Antioxidants like bakuchiol and licorice root to defend against environmental damage.

How should I use the serum and what results can I expect?

Apply a few drops directly to the scalp in thinning areas once or twice daily and gently massage to distribute; no rinse required. Consistent use supports the appearance of fuller hair and reduced visible shedding, though individual results vary and depend on routine and hair condition.

• Apply to dry or towel-dried scalp; massage for 30–60 seconds.
• Use daily for best maintenance; compatible with other styling products.
• Safe for men and women seeking to improve hair fullness appearance.

Who is this for: THORN & BERRY Hair Growth Serum is formulated for people noticing fine, thinning or fragile hair who want a non-greasy, cosmetically elegant topical treatment. It suits anyone seeking a clean-ingredient, peptide-forward approach that pairs botanical DHT-support with protein repair and moisture—appropriate for all hair types and daily routines.