... ). LPP is suggested use for injured hair before intenerating.3.spray on PH Conditioner, leave on for 2-3 minutes, rinse ... spread LPP evenly, put heat sticks on, heat up for 15-18 minutes.5.cold down in room temperature, ... the left neutralization. Apply the mixtureto hair, leave on for 7 minutes, rinse outHair Perm GMP,ISO, GMPC,manufacturer ... achieve the most vibrant colors Hair Perm,hair care products