INOA — SL

INOA is L'Oréal's ammonia-free permanent color system — a gentler alternative to standard hair dye that processes at a lower temperature, leaving hair noticeably softer after coloring while still delivering full grey coverage. It's the salon's go-to recommendation for color-sensitive scalps or clients who dislike the smell and dryness of ammonia dye. SL is for waist-length hair, running close to 2.5 hours total — the extra processing time ensures the gentler formula still reaches full saturation on longer, thicker hair.

What to Expect