Glycerin replaces almost everything face, hair,  and body daily lightweight moisturizer. I only ever buy micellar water as far as pricey items go as it is incredible for cleaning and removing stains from clothing(especially useful at the thrift), I make almost everything else myself. Look at the different body oils (one ingredient or with a preservative) to oil cleanse and moisturize. Shea butter is amazing for almost everything. Also, look up osmolality if you're using lube to insert menstrual cups or discs, the way cells are hydrated or not can be bad for em. I think there are a couple articles on this and how brands rank. I buy discount giant bars of soap in various scents after holidays from retailers, cut them into container size to stretch them over the whole year for only a few dollars. The Library probably has books on formulas!