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Quantity
1
Peroxide (developer) guide:
5vol (1.5%) No lift
10vol (3%) Up to 1 level of lift
20vol (6%) Up to 2 levels of lift
30vol (9%) Up to 3 levels of lift
40vol (12%) Up to 4-5 levels of lift
Use natural 1- 10 series for non resistant grey coverage.
Only use intense natural .00 series for resistant grey coverage.