Is Olia a permanent dye?

Olia is an ammonia free permanent hair colour powered by 60% oil blend with natural flower oils to deliver maximum colour performance and visibly improved hair quality, colour after colour.

Does Garnier Olia damage hair?

Runner-Up: Garnier Olia Ammonia-Free Permanent Hair Color There’s no ammonia in this product, and the unique oil blends make up 60% of the total formula, making this dye safe for all types of hair. According to one reviewer: “I was afraid to dye my very damaged hair that I had accidentally over lightened.

Should I wash my hair before using Olia hair dye?

It is not necessary to wash your hair before applying hair colour. It is actually better to apply hair colour on un-washed hair, as the sebum secreted protects the scalp and allows the colour the last longer.