Its anti yellow molecules for clear blonde results. multi-purpose applicability with up to 7 levels of lift. product information sheet key features anti yellow molecules for clear blonde results up to 7 levels of lift highly flexible through multipurpose application and different mixing ratios mixing recommendation mix with welloxon perfect pastel, 6%, 9% or 12% in a non-metallic bowl. mix in a ratio of 1:1,5 up to 1:2 (not 1:1) if there is contact with the scalp (global or root application), use welloxon perfect pastel or 6% only. application & development time apply to dry hair that has not been pre-shampooed. development of bleach is visual and is dependent on depth of colour and porosity of hair. check hair every 5-10 minutes. maximum total development time is 50 minutes. 1st-time application: apply mass to mid-lengths and ends first, and to root area as a second step. after care emulsify the bleach with a little warm water and rinse out well. apply blondor blonde seal & care after rinsing for shine and care.