I have purchased this product once before at the hair salon I used to go to, as I've now moved & gone to a different salon who do not stock it I was very pleased to discover it on Amazon. I have naturally loose curls but very determined & stubborn! I use just the one application before blow-drying my hair straight & using my ghd's. It really does smooth my hair & tame the dreaded frizzies & flyaways. I used it in August of last year in Marbella, and the humidity didn't react with my hair after using this product. It also protects against heat damage so if you are like me & blow-dry & straighten regularly it is essential to protect your hair. I have also applied after washing my hair, combing and and then leave my hair to dry naturally and again the result is smooth & glossy just loose, shiny curls instead of straight hair. I will buy again (but not for a while, it lasts ages - you only need a tiny amount)as the product is so good & the seller was fast & the item well-packaged, so I was very pleased.