Application: First check condition of the hair; do strand test and skin sensitivity test. Mix and apply Immediately. Bleach start to work the second it mixes, the reaction happens during the first 20mins. After 40mins, the mixture will no longer work. Mixing ratio is 1 part bleach for 2 parts developer. developer can be 2 vol, 5 vol, 10vol, 20vol, 30vol, 40vol. 40 vol should never touch the scalp or skin Resistant hair or virgin dark hair can be 1 part bleach for 1,5 part developer Apply to non washed hair, dry or damp. Saturate properly from the darkest section first. Be aware that bleach can damage your hair, check color every 5-10 mins Do not apply to permed hair, which will cause further damage and uneven coloring. Hair that has been dyed jet black may not lift. Do not bleach henna type dye (metallic type dye) This will cause a chemical reaction and damage your hair and scalp. Do not apply on eyebrow or lashes. Rinse immediately if any skin condition occurs Processing time is 30-40mins. Resistant hair can develop up to 60mins Heat can be applied with caution For damaged hair , lightening more than 3 levels or heat processing: order some Chromaplex or Olaplex and add to your mixture. This is highly recommended Important tips! Brazilian treatment will be removed to some degree with bleach or any other cuticle altering chemicals After bleach coloring applications: if you are planning to apply any color or stain after bleaching. make sure to shampoo the bleach off completely, by using clarifying shampoo at-least 2 washes Otherwise you may find the residue bleach "burning" or interfering with the next color, especially semi permanent tints Bleaching hair extensions Only pure virgin hair can be bleached, always do a test strand before processing entire hair piece Trouble shooting: #1 jet black hair will never bleach. pitch black hair extensions are dyed to resist fading, unlike box dye, this will not bleach well. Natural black hair extensions will not become platinum blonde, without severe damage. We do not recommend it.