It depends on what your skincare needs are and what kinds of products you like to use. A lot of people really love the Angels on Bare Skin cleanser, it seems to be pretty universally popular. I have a tub of Herbalism still sitting on my sink, it's pretty good, but I feel like I get better results for my troubled skin with homemade cleansers/exfoliators. Their moisturisers are great, I used to use Celestial in the winter and Imperialis in the summer. Ultrabland is a great makeup remover. I use Eau de Roma toner to do a damp application of my mineral makeup, and it's incredibly gentle, plus it smells great. Their face masks are awesome if you're near a store.
As far as everything else goes, their perfumes are worth trying out, especially the solids, and I think the bath bombs are amazing, especially the winter/seasonal ones. One of my besties swears by their henna bars and their Fluff Ease. Charity Pot is a great tub of lotion, my husband loves it, and he loves their Guv'ner deodorising charcoal powder. It's really just a matter of what you want and what you're looking for when it comes to their products.