Safety & Contraindications

Can I colour hair or tint lashes and brows for under-16s in the UK?

No — not with oxidative colour. Permanent and demi-permanent hair dyes, and most lash and brow tints, contain PPD-type colourants that carry a mandatory legal warning: "This product is not intended for use on persons under the age of 16." That wording comes from the cosmetics regulations, not the manufacturer being cautious, and the NHBF's guidance to salons is blunt: don't colour under-16s at all.

The part that catches salons out is insurance. Most UK salon policies simply won't cover a colour or tint service on a client under 16 — so if a 15-year-old has a reaction, you're personally exposed, and "mum said it was fine" is not a defence. Parental consent does not override the product warning or reinstate your cover.

What the standard looks like in practice:

Every client, remembered — safely.

SAY-OS keeps each client's contraindications, allergies and history in one place, and flags them at booking — so the right call happens before they're in the chair.

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