Every INCI. Grouped by what it actually does.

Familiar ingredients in density-focused hair care, sitting beside the peptides.

• Adenosine

  A widely used cosmetic ingredient, included for the look of fuller hair.

• Caffeine

  A common scalp-care ingredient, for a scalp that feels refreshed.

• Diaminopyrimidine Oxide

  A cosmetic ingredient used in density-focused hair formulas.

• Pyrrolidinyl Diaminopyrimidine Oxide

  A related cosmetic ingredient, used alongside it.

• Biotin

  A B-vitamin common in hair care. Here it sits next to the biotin-linked peptide.

• Glycine

  An amino acid used as a conditioning ingredient. Quiet support, not a headline.

Plant extracts commonly used in scalp serums, for the temples and crown.

• Serenoa Serrulata Fruit Extract

  Saw palmetto. A classic botanical in scalp care.

• Trifolium Pratense (Clover) Flower Extract

  Red clover. A familiar botanical in density-focused formulas.

• Larix Europaea Wood Extract

  Larch wood. A botanical used in scalp-care formulas.

• Apigenin

  A plant flavonoid used in scalp serums alongside oleanolic acid.

• Oleanolic Acid

  An olive-derived ingredient, used with apigenin and the biotin-linked peptide.

• Panax Ginseng Root Extract

  A traditional botanical for a scalp that feels refreshed.

• Ginkgo Biloba Leaf Extract

  A classic scalp-care botanical.

• Camellia Sinensis Extract

  Green tea polyphenols, an antioxidant botanical.

• Camellia Sinensis Leaf Extract

  Leaf-fraction green tea. Listed separately because the INCI is separate.

• Azelaic Acid

  A dicarboxylic acid used for the look of a calmer, clearer scalp.

• 10-Hydroxydecanoic Acid

  A fatty acid used for a scalp that feels less oily.

Conditioning ingredients so the scalp stays comfortable in the routine. No perfume cloud.

• Panthenol

  Pro-vitamin B5. Softness and the look of thickness in the shaft.

• Sodium Hyaluronate

  A light hyaluronic so the serum sits on a hydrated surface instead of pilling.

• Urea

  A natural moisturizing factor. Helps the scalp stay comfortable between sessions.

• Cholesterol

  A lipid that conditions the skin of the scalp.

• Zinc Chloride

  A zinc salt used in scalp-care formulas.

How the peptides stay in the serum and stay stable. Named, not hidden in a blend.

• Aqua

  The solvent. Everything else rides in water.

• Butylene Glycol

  Humectant and solvent for the actives.

• Propanediol

  A glycol for slip and solvency.

• Pentylene Glycol

  Humectant with mild preservation support.

• Glycerin

  Classic humectant. Keeps the gel from feeling tight.

• Propylene Glycol

  Solvent for botanicals that will not dissolve in water alone.

• 1,2-Hexanediol

  Preservation booster.

• Hydroxyacetophenone

  Antioxidant preservative helper.

• Phenoxyethanol

  The primary preservative. Keeps a water-based serum stable.

• Cyclodextrin

  Inclusion complex — helps keep actives soluble and stable.

• Hydroxypropyl Cyclodextrin

  A second cyclodextrin for the harder-to-dissolve ingredients.

• Xanthan Gum

  The gel. So the serum stays in the stamp instead of running off.

• PPG-26-Buteth-26

  Solubilizer, paired with PEG-40 hydrogenated castor oil.

• PEG-40 Hydrogenated Castor Oil

  Solubilizer for the botanical fraction.

• Dextran

  A carrier often used to stabilize tetrapeptide complexes.

• Alcohol

  Solvent. Helps certain botanicals stay in solution.

• Lecithin

  Phospholipid. Helps the serum sit on skin instead of beading.

• Disodium Phosphate

  pH buffer.

• Sodium Metabisulfite

  Antioxidant. Protects the copper peptides in the bottle.

• Citric Acid

  pH adjuster.