Great but probably not for severe acne
My acne is pretty particular... I occasionally have hormonal cystic acne on the cheeks and chin but most of the time, my acne is purely comedone acne from excess sebum production. So exfoliating products like this one, which are also gentle and not full of a lot of physical or chemical exfoliants, are for me. I like using this every day. For my skin, which is fairly sensitive but not prone to aggressive acne, this works really wonderfully. It's gentle but still a bit exfoliating and calming.
Although LUSH really sells this as a charcoal product, it's actually a LICORICE root ("liquorice" in the UK and Canada, btw) product, which is why you should be interesting: the Acne.Org regime pushes a licorice root biproduct (licochalcone) hard because it's a gentle, natural anti-inflammatory. But licorice hasn't yet become a popular trendy ingredient so it's hard to find. This is actually the first ingredient, above water itself, and waaaaaaay about anything related to coal, in the Coalface product.
So when I use this, I occasionally use it as a mask and leave it on my skin for a few minute before washing it off.
It's not a miracle worker, but I always find that my skin behaves a lot better when I'm washing with this versus any other face wash.