Is Sulfate-Free Shampoo Better for Coloured Hair?

Yes. And here's why it's not even close.

If you colour your hair — whether that's a full dye, highlights, balayage, or a keratin treatment — sulfates are working against you every single wash. Sulfates are the harsh detergents in most mainstream shampoos. They're effective at stripping oil and dirt, but they don't stop there. They also strip colour molecules from the hair shaft, which is exactly why your colour fades faster than it should.

What do sulfates actually do to coloured hair?

Coloured hair has an open cuticle — the outer layer of the hair strand was lifted during the colouring process to allow pigment in. Sulfates exploit that. They penetrate the cuticle, pull out colour, and leave the hair feeling dry and porous. Over time, this leads to dullness, brassiness, and that washed-out look that sends you back to the salon sooner than planned.

What does sulfate-free shampoo do differently?

A good sulfate-free shampoo cleans the scalp and hair without the aggressive stripping. It uses gentler surfactants that remove buildup and excess oil while leaving the hair's natural moisture — and your colour — intact. The result is colour that lasts longer, hair that feels softer, and fewer salon visits.

Is it as clean though?

Yes — if it's formulated well. The OFF DAYS Everyday Shampoo is sulfate and paraben-free, and it cleans thoroughly. Cucumber extract hydrates while flax extract builds strength and integrity. It's gentle enough for daily use on chemically treated hair without compromising on the clean.

The bottom line

If you colour your hair and you're still using a sulfate shampoo, you're paying to fade your own colour. Switch to sulfate-free and your colour will last longer, your hair will feel better, and your wallet will thank you at the next salon visit.

Safe for keratin, balayage, highlights, and all chemically treated hair.