function of beauty ingredients?

hey! so, I wasn’t sure where to ask this but I feel like someone in this group might know 😂😂

I’ve been seeing a lot of ads for function of beauty and I went to check them out, but I couldn’t find a list of ingredients for any of their products. I saw a list of ingredients they don’t use, and it gave me 4 specific ingredients that they said would fit my hair goals (I was looking at the shampoo/conditioner specifically), but I can’t figure out what else is in it.

like, the base ingredients (or at least possible base ingredients, because I know every formula is different) just weren’t anywhere to be found on the whole site. this was really weird for me because I just don’t feel comfortable buying a product if I don’t know what’s in it. did I miss something? or do they literally not tell you a full list?