I work in a kerastase salon and won this product for doing the most in-salon treatments (75 for 1, 150 for a box of 10 to do at home) This is a really expensive treatment , but i think i will actually buy it when i'm done. Basically this treatment is supposed to do in one what every other treatment does (give shine,volume, repair and help the scalp) in my opinion it does what it says so far (i've done 3 in the past month) my hair was in need of serious help after bleaching, when i would blow dry (with the brush) my hair was stiff and frizzy and just gross. Now i'm starting to see a healthy shape come back , my volume lasts for 2 days and my hair doesnt get greasy on the 2nd day anymore! it's awsome ! (i had been washing my hair evey day for the past year) i have fineish hair and when i used to wake up in the a.m the whole bottom of my hair was like a hay texture mess (i can't even describe it) well that doesnt happen anymore. i used this product with bain de force shampoo and conditioner and blow dry with nectar thermique. overall i thought this was a real treat, i used to use treatment as conditioner so it's really hard to find a masque that wows me.