Bleach -

: Typically use a 1:1 or 1:2 ratio of bleach powder to developer, depending on the product instructions .

: 20 volume is standard for most lifting; 40 volume is the harshest and should be used with extreme caution. BLEACH

Lightening hair at home requires careful timing and the right volume of developer to prevent chemical burns or hair breakage. : Typically use a 1:1 or 1:2 ratio

: Do not wash your hair for at least two days prior to let natural oils protect your scalp. : Do not wash your hair for at

: Mix 5 tablespoons (1/3 cup) of bleach per gallon of room-temperature water.

Bleach can be used to "paint" or stencil designs onto dark-colored fabrics. Emergency Disinfection of Drinking Water | US EPA

: In emergencies, use 8 drops of 6% bleach per gallon of clear water and wait 30 minutes before drinking. Hair Bleaching