The Fatazen

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Multi-Peptide Serum for Hair Density

Multi-Peptide Serum for Hair Density

90-Day Satisfaction Guarantee Full Terms one day.

Recommended use: 6 months for best results.

The Fatazen Density + Repair scalp serum is dermatologist-developed for hair growth. Built on HairScience, designed to work where healthy hair actually begins: your scalp. It's a barrier-boosting scalp serum with a dual-action approach, supporting hair growth while repairing and strengthening your scalp's delicate skin barrier.

The lightweight, oil-free formula delivers active ingredients directly to your follicles. Caffeine and bioactive peptides help reduce shedding and encourage stronger growth, stem cell extracts support follicle regeneration, and niacinamide soothes, balances, and protects your scalp barrier. It absorbs quickly with no residue, so it works quietly in the background of your day.

The serum can be used on its own as a daily scalp treatment, or paired to help optimise absorption and results. Suitable for all hair types and textures, including sensitive and colour-treated scalps. Vegan, fragrance-free, and non-comedogenic.

Ultra-lightweight and Minoxidil-free
Fragrance-free and formulated without common allergens
Clinically suitable for sensitive scalps and designed to perform across all hair types
Safe for use during pregnancy
Vegan and cruelty-free

Promotes Hair Growth
Stem cell extracts encourage follicle regeneration at the root, helping to support your scalp's natural growth cycle. Bioactive peptides strengthen hair from the follicle up, while caffeine energises and stimulates for fuller, thicker-looking hair over time. Together, they work to reduce shedding and support visible density.

Reduces Hair Shedding
Caffeine boosts circulation to the scalp, helping to reduce hair shedding and keep more strands where they belong. Stem cell extracts stimulate collagen production around the base of your hair follicles, strengthening the foundation that holds each strand in place. Less hair in your brush, more hair on your head.

Blocks DHT
Saw palmetto works to block DHT, a hormone closely linked to hair thinning and follicle miniaturisation. By helping to balance hormonal activity at the scalp level, it supports your follicles in staying active and healthy for longer. Caffeine adds an extra layer of defence, helping to counteract DHT's effects so your hair can keep growing without interference.

Boosts Scalp Barrier
Your scalp is skin, and it deserves the same care as your face. Niacinamide soothes irritation, balances oil production, and strengthens your scalp's protective barrier. Panthenol locks in moisture, improves elasticity, and adds a natural-looking shine to your hair. A healthy barrier means a healthier environment for growth.

Reduces Flakiness + Balances Oil
Salicylic acid works as a gentle exfoliant, unclogging scalp pores and clearing the buildup that can suffocate follicles. By keeping oil levels balanced and flakiness in check, your scalp stays fresh, clear, and ready to do its job: growing healthy hair.

Use daily on dry or wet hair. Works beautifully as the final step in your rhutine.

Step 1: Section. Divide your hair into four equal parts to expose your scalp. Sectioning clips help if you have longer hair.

Step 2: Apply. Use one full pipette per section, applying directly to your scalp. The pipette automatically delivers the right dose, so no guesswork needed.

Step 3: Massage. Work the serum into your scalp using your fingertips in gentle circular motions for around five minutes. This helps absorption and supports circulation.

Step 4: Leave in. No need to rinse. The lightweight formula absorbs quickly with no oily residue, so you can style as normal or head straight to bed.

Tips for Best Results

Apply consistently. Daily use for a minimum of three months delivers the best results.
Pair with the rhute Derma Stamper to enhance absorption and support your scalp's growth environment.
Focus on areas of concern: crown, hairline, widening part, or wherever you're noticing thinning.

Why You’ll Love it

Ultra-lightweight and Minoxidil-free. Fragrance-free and formulated without common allergens. Clinically suitable for sensitive scalps and designed to perform across all hair types. Safe for use during pregnancy. Vegan and cruelty-free.

Clinically tested and dermatologist-approved for:

Men and women experiencing hair thinning or shedding
Post-partum hair shedding
Hormonal hair thinning, including during menopause
Receding or stressed hairlines from repeated tight hairstyles
Naturally fine or low-density hair
Anyone seeking fuller-looking, healthier hair

Aqua (Water), Pentylene Glycol, Butylene Glycol, Glycerin, Propanediol, Curcuma Longa Callus Culture Conditioned Media, Acetyl Tetrapeptide-3, Avena Sativa (Oat) Peptide, Biotinoyl Tripeptide-1, Caffeine, Niacinamide, Serenoa Serrulata Fruit Extract, Salicylic Acid, Oleanolic Acid, Trifolium Pratense (Clover) Flower Extract, Pseudoalteromonas Ferment Extract, Panthenol, Camellia Sinensis (Green Tea) Leaf Extract, Sodium PCA, Sodium Lactate, Aspartic Acid, Polydextrose, Arginine, Valine, Isoleucine, Proline, Threonine, Glycine, PCA (Pyrrolidone Carboxylic Acid), Larix Europaea (Larch) Wood Extract, Alanine, Caprylyl Glycol, Serine, Sodium Metabisulphite, Dextran, Histidine, Phenylalanine, Phytic Acid, Zinc Chloride, Apigenin, 1,2-Hexanediol, Algin, Hydroxyethylcellulose, Caprylhydroxamic Acid, Cellulose Gum, PEG-40 Hydrogenated Castor Oil, Disodium EDTA, PPG-26-Buteth 26, Benzoic Acid, Sodium Salicylate, Sodium Benzoate

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Product Details

Multi-Peptide Serum for Hair Density is a concentrated leave-in formulation designed to support the scalp. It helps give you thicker, denser, fuller-looking hair. The formulation is lightweight and offers a combination of peptide technologies alongside a series of plant-based extracts.

This formula contains REDENSYL™, Procapil™, CAPIXYL™, BAICAPIL™, AnaGain™, and High-Solubility Caffeine.

All trademarks belong to their respective owners. REDENSYL™ is a trademark of Givaudan, Procapil™ is a trademark of Sederma Inc., CAPIXYL™ is a trademark of Lucas Meyer Cosmetics Canada Inc., BAICAPIL™ is a trademark of Provital, S.A., and AnaGain™ is a trademark of Mibelle Biochemistry. Neither DECIEM nor The Ordinary is affiliated with the trademark...