Schwarzkopf's new Oil Developer is a conditioning, caring peroxide that's optimised to work with Igora.It comes in 4 strengths: 3% (10 vol) for darker or pastel colouring and for covering 100% white hair; 6% (20 vol) for tone-on-tone colouring, white hair coverage and lightening 1–2 levels; 9% (30 vol) for...

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Schwarzkopf's new Oil Developer is a conditioning, caring peroxide that's optimised to work with Igora.It comes in 4 strengths: 3% (10 vol) for darker or pastel colouring and for covering 100% white hair; 6% (20 vol) for tone-on-tone colouring, white hair coverage and lightening 1–2 levels; 9% (30 vol) for lifting 2-3 levels (3-4 levels...

Schwarzkopf's new Oil Developer is a conditioning, caring peroxide that's optimised to work with Igora.It comes in 4 strengths: 3% (10 vol) for darker or pastel colouring and for covering 100% white hair; 6% (20 vol) for tone-on-tone colouring, white hair coverage and lightening 1–2 levels; 9% (30 vol) for...

Schwarzkopf's new Oil Developer is a conditioning, caring peroxide that's optimised to work with Igora.It comes in 4 strengths: 3% (10 vol) for darker or pastel colouring and for covering 100% white hair; 6% (20 vol) for tone-on-tone colouring, white hair coverage and lightening 1–2 levels; 9% (30 vol) for...