I have a fb friend who makes bathbombs but she puts "stuff" in them so ha e never been tempted to buy.
I wonder if she's selling those legally? The thing with making soaps and bathbombs, etc, to sell, is you have to follow the EU Cosmetics Directive, and there are a whole host of regulations to follow, some of which cost quite a bit to comply with. Some of these are rules around what should be on the labels (a full ingredients list, in order of amount used, in INCI format, and listing any allergens, plus weight, batch number, and shelf life logo), maximum amounts of essential oils (which differs depending on the EO), and most importantly, all your different recipes, must have toxicology/safety assessments. The safety assessment for one recipe along can cost a few hundred £s. You also have to keep detailed records, and should have public liability insurance.
If she hasn't done all this, she could get into deep trouble.
I stopped selling, because they kept adding amendments to the regulations, meaning it was costing me more, and creating more admin and paperwork. It's fine for the big companies, as they have their own in-house chemists, and can buy the ingredients in tons, rather than the kilos or less, that I was.
It's a shame, because I really enjoyed it, and my customers loved my products.