This is a great product if you have damaged hair due to bleaching or colouring. Don't be fooled by the size of the container. You can see the effects it has on your hair after just 1-2 uses. It says to use once a week after your normal shampoo and conditioning and if you have short - medium length hair, you will easily be able to get 2 uses out of the 20ml container. Even if you have long hair, the product is fairly affordable if you have to pick up a couple more. Over all, the product works great and is affordable. I definitely recommend it!