Every year I decide to make gifts, and most years I don't. The reason is always the same, and it isn't time or skill. It's the shopping list. You find a guide with five lovely projects, you add up what they need between them, and it's thirty-one ingredients — most of which appear exactly once. The cart comes to two hundred and forty dollars for things you'll use one spoonful of. You close the tab and buy candles.
So this year I built the guide backwards. I started with the shopping list and asked what four products I could make from it, rather than choosing four products and adding up the damage.
The answer turned out to be sixteen ingredients, and only two of those are used by a single product. One tub of shea butter goes into the body balm, the face whip and the lip balm. The jojoba runs through three of the four. The beeswax and castor oil are shared between the two balms. The glycerin, the hyaluronic acid, the panthenol and the preservative are shared between the serum and the whip. The only two ingredients that earn their place for one product alone are the emulsifier and the fatty alcohol that turn oil and water into a cream — and there's no way around those, because that's what makes a whip a whip.
Here is the part that matters. Your first complete set costs about $124 in materials, and that number is honest but misleading. You're not buying a product, you're buying ingredients, and almost all of them arrive in quantities that make far more than one of anything. A 5 g bag of hyaluronic acid — about fourteen dollars — makes nineteen complete sets. A one-ounce bottle of vitamin E makes thirty-three. A 25 g bag of sodium phytate makes two hundred and seventy-eight, which is frankly a lifetime supply of a thing most people have never heard of.
Buy the sensible sizes instead of the sample sizes and the whole list comes to roughly a hundred and fifty-five dollars. That makes ten complete four-piece sets. Forty finished gifts, at about fifteen dollars and fifty cents a set — a serum, a whipped face cream, a body balm and a lip balm, in a box, with a label on.
The four products are deliberately chosen to be different from each other, not just different flavors of the same thing. The body balm is anhydrous — butters, wax and oil, melted and poured, nothing that can split. The lip balm is the same five ingredients in different proportions, which is a genuinely useful thing to understand: 16% wax gives you a tin balm, 26% gives you a tube. The serum is five ingredients and about thirty cents a bottle. The face whip is the only one with real technique to it, and it's the one people will ask you about.
Between them they also teach four things: a melt-and-pour, a slurry, a preserved water-based product, and an emulsion. That's most of what formulating actually is. Everything after this is choosing better ingredients and knowing what percentage to use them at.
One honest note about timing. If you're making these as gifts, order the ingredients about three weeks before you need them finished. Shipping, then a making afternoon, then a day for the balms to set properly, then boxing and labeling. It isn't a lot of work, but it isn't a Christmas Eve project either.

