Makeuppro is so right. I was taught to mix up masks for my clients using oatmeal, calamine and kaolin, witch hazel, rose water etc. The results are very good - at least equal to all the entry level facial products. Coloured clays are also brilliant, research the different properties.
You can use a clay mask as a scrub, or gommage. You cleanse the skin, apply a smear of oil and then friction away using skin refining techniques to keep your bingo wings under control. After a few minutes the consistency will “split” and you can feel the clay becoming less wet and more of an absorbent polishing medium.
Clients love having something mixed just for them, especially if you use different ingredients each visit. You can get creative with your descriptions on your website. For a long time I used to have a seasonally changing facial which I loved thinking about: rose and cucumber in June, a citrus based “sun, sea and sand” facial in high summer, autumn mists and fruitfulness in autumn, and chocomocha in winter - you get the idea. It was a novelty which didn’t sell unfortunately but I think it drove more traffic to my website.
A tip for removal. Dried clay can be a bitch! Either don’t leave it on to dry - it can tighten and feel uncomfortable, or apply over damp gauze. It makes removal a dream.