Joico K-Pak Revitaluxe Bio-advanced Restorative treatment works wonders. It costs $22.99, but it is on sale at Ulta Beauty several times a year (buy one, get one half off or $9.99). It comes in a 5.1 fl oz/150 ml squeeze tube. The packaging is a gorgeous gold, black and white colour. It moisturizes dry, frizzy, and brittle hair and makes it softer. If your hair is damaged due to chemicals, hair colour, and heat damage this is a great protein treatment, this product just might work for you. (Not every product works for everyone). I am currently transitioning to my natural hair from using a relaxer for many years. I have thick curly hair (3c back and sides/4a mostly). I highly recommend this product. Cons: 5.1 fl oz is the largest size that I saw.