Diaminopyrimidine oxide

Diaminopyrimidine oxide (CAS 74638-76-9), also marketed as Aminexil and Kopexil, is an active ingredient for topical scalp and hair care formulations.

Where is Diaminopyrimidine oxide used?

• Leave-on scalp serums, ampoules and treatment lotions: primary active against hair thinning and premature hair loss
• Professional salon treatments and retail anti-hair loss ranges: combined with actives such as minoxidil or niacinamide
• Shampoo and conditioner formats: scalp-conditioning benefit claim
• Dermocosmetic and trichology brands use it to substantiate clinical efficacy claims.

Good to know: It targets the perifollicular collagen structure to help maintain hair anchoring. Cosmetic-grade material is standard, with purity commonly 99% or higher.

Commercial specifications

• Purity commonly 99% or higher for bulk quantities and research samples