Dear Ouidad: A friend of mine said she sleeps with the deep treatment on her hair under a cap overnight and rinses in the morning. Is this a good idea?

A: Yes! However, I would highly recommend you heat activate it for at least 5-7 min with a blow dryer first, or even wrap a hot towel around the shower cap and sleep with it wrapped.

My friend is a hair stylist, she she informed of this fact. But I also found it true myself. You should be very careful with which DT & DC you want to leave in longer than it suggests on the bottle. There are certain conditioners etc that say on the bottle great for leaving over night, but beware of those that do not... some can actually do the opposite effect and can dry out your hair if left on too long! TriniChel