4-0 (N) OYA Demi-Permanent Color Natural Medium Brown
Use for gray blending.
Mix with OYA lotion 5 vol. (1.5%).
Mixing ratio 1:1 (1 part color with 1 part OYA lotion).
The perfect solution to support strong healthy hair * 43 colors that work in perfect "Harmony" with the OYA Permanent Color collection * A "shine only" clear shade for every color service * Neutral balanced formula promotes condition, shine, resilience and color correction * 5 concentrates that can be combined with any OYA formula * Mixing ratio 1:1 (1 part color with 1 part OYA Lotion)