loreal color touch up

Temporary root sprays typically last until your next shampoo. Permanent root kits provide longer-lasting color, described as remaining for several weeks.

Common “free-from” labels noted across products include: dye-free (on some sprays), formaldehyde-free, aluminum-free, ammonia-free, sulfate-free (temporary sprays), and paraben-free (on some permanent kits).

Temporary sprays: shake the can, hold about 6 inches from new growth, spray onto roots, blend through the hair, comb if needed, and let dry. Permanent root kits: mix the formulation per instructions, apply to roots with the included applicator, allow the recommended processing time, then rinse and wash out as directed.

Temporary root sprays are described as lightweight and quick-drying and are noted to leave no smudging or sticky residue once dry.

Temporary sprays advertise near-instant coverage—examples include claims like “in just 3 seconds” or 2-minute processing times. Permanent root kits list longer processing times, commonly around 10 minutes.