Peroxide: Aqua (Water/Eau), Hydrogen Peroxide, Cetearyl Alcohol, Ceteareth-30, Oleamide DEA, Glycerin, Sodium Salicylate, Acetic Acid, Sodium Stannate, Disodium Pyrophosphate, Phosphoric Acid. Bleach: Potassium Persulfate, Sodium Metasilicate, Ammonium Persulfate, Sodium Stearate, Cyamopsis Tetragonoloba. Gum: Paraffinum Liquidum, Solanum Tuberosum Starch, Silica, Sodium Persulfate, EDTA, CI 77007.

Step 1: Put on the gloves you can throw away, then pour the contents of both bleach sachets into the mixing bowl (don't breathe in the powder).
Step 2: Mix the cream peroxide developer with the tint brush until it is smooth and creamy. Use 100ml peroxide to 50g bleach as a guide.
Step 3: Put it on dry, unwashed hair in an even layer and let it sit for the amount of time shown in the instruction leaflet.
Step 4: After 20 minutes, check a small area every 10 minutes to see how much lift there is and stop the process if it gets too much.
Step 5: When the right level is reached, wash your hair well with shampoo and warm water, being careful not to touch your eyes.