Herbal Essences has been a household name ever since those sexual commercials made it to TV. And if you swear by them, this $3.50 coupon from Amazon can help you restock. From curly hair, to hair in desperate need of some shine, this coupon works on a ton of products for all hair types. And it’s not just limited to shampoos and conditioners, with styling gels, mousses, and more included as well.