Always use OYA lotion 10 volume (3%) for gray coverage, coloring tone-on-tone, and coloring darker.
OYA lotion 10 volume guarantees long-lasting gray coverage.
OYA lotion maintains hair quality and structure.
Mixing ratio 1:1 (1 part color with 1 part OYA lotion).
4 dedicated lotion for use with OYA Permanent Color: * 10 volume (3%) for all gray coverage and deposit only * 20 volume (6%) up to 2 levels of lift * 30 volume (9%) 2 to 3 levels of lift * 40 volume (12%) 3 or more levels of lift 1 dedicated lotion for use with the OYA Demi Permanent Color: * 5 volume (1.5%) deposit only
