Mixing and storage

Dissolve the powder in about 2 mL of bacteriostatic water first, swirling and never shaking, then fold that liquid slowly into the cream base and stir until it is even all through. Store the powder cool, dark and dry before mixing. The finished cream lives in the fridge, in an airtight jar or pump bottle, and is used within about four to six weeks, which is roughly how long one batch lasts anyway. Let the jar come to room temperature on the counter for a minute before applying so it spreads thin.