Hair Color

PPD (para-phenylenediamine) is the primary allergen in conventional dark hair dyes — always patch test 48 hours before any color application, even with natural formulas you have used before.

Henna is a plant-based option providing reddish tones and can be layered with indigo for darker shades. Ammonia-free formulas are gentler on the hair structure, though they typically provide less lift than conventional formulas.