Bonacure has a great line of sun care products, and I have tried a wide variety of them. Of them, this is the one that I am most satisfied with. This after sun treatment can be left in your hair, or washed out like conditioner. I love versatility and this product is easy enough to slather in your hair after a day at the beach or at the pool, and just go - or if you have more time leave it in your hair and get a great treatment either way.
As for the effective factor, even after a couple of uses my hair seemed more lush, and not dried and fried as it usually is from the sun, salt water, or chlorine - this is another great thing about this product. I found it not only effective for the sun, but the salt water, and chlorine too!
The fragrance is a tad plastic, but still - it is subtle if it is washed out...
Another salon brand that is of great quality, and is affordable as well!