Hair in Balance by ONLYBIO Toner Oreo 100 ml

Packaging and what the product is

The quoted photo from onlybio.life shows a dark 100 ml bottle with a nozzle tip next to a black carton printed with the large word “toner” and “oreo”, plus the description “gives an intense black shade of crunchy cookies” and a vegan badge. It is part of the Hair in Balance by ONLYBIO toner range, which comes in many dessert-named shades. Toners like this are applied to washed hair, left on for the time on the label and rinsed out.

Ingredient analysis

The base is a hair conditioner: water and butylene glycol, cetearyl alcohol, and the conditioning agents stearamidopropyl dimethylamine, behentrimonium chloride and cetrimonium chloride, which smooth the cuticle and help the dyes adhere. Aloe leaf juice, Astrocaryum Murumuru seed butter and tocopherol add care; lactic acid adjusts the pH.

The colour comes from a mix of direct (non-oxidative) dyes – Basic Brown 16, Basic Yellow 57, HC Blue 2, Basic Blue 99 and Basic Blue 124 – combined to give a black tone. Because there is no developer or ammonia, the colour sits on the hair surface and washes out gradually. Benzyl alcohol, benzoic acid and dehydroacetic acid preserve it; parfum and vanillin give the sweet scent.

What to watch out for

Direct hair dyes are regulated substances in the EU, with set maximum concentrations, and can cause allergic reactions; follow the label’s instructions, including any recommended skin test. Use gloves – the dyes stain skin, towels and bathroom surfaces. The result depends strongly on the starting colour and porosity, so it may look grey rather than black on light or grey hair.

What users say

Rossmann.pl shows 4.35/5 from 60 verified-purchase reviews and Wizaż shows 4.0/5 from 4 ratings (both checked 30 Oct 2026). Short Rossmann comments praise the intense colour, good coverage, soft hair and price. On Wizaż, two reviewers are very happy – long-lasting colour, help in masking a visible scalp, a lovely scent – and one mixed it 1:1 with a hair mask for a softer effect.

One Wizaż reviewer was disappointed: even after the longest application time the result was dark grey rather than intensely black and her roots remained visible. Detailed reviews are few, so expect individual results to vary.

Who it may suit

Dark-haired people who want to refresh or deepen black tones between colourings, without a permanent dye. It is not a substitute for permanent colour if the goal is full grey or root coverage.