Skin Prep
The steps taken before any makeup goes on, which determine how everything applied afterward looks and lasts.
What it is
Skin prep is everything done to the skin before foundation goes on - cleansing, moisturizing, and any targeted treatment - that determines how evenly makeup applies and how long it holds up. It's easy to skip because its effects aren't visible on their own, but most of what makes foundation look "cakey" or "patchy" traces back to the skin underneath it, not the foundation itself.
How it works
Foundation and other base products grip unevenly on uneven surfaces - dry, flaky patches absorb product differently than smooth, hydrated skin, and overly oily skin can break a base down faster than it should wear. Moisturizer fills in fine dry texture so foundation has a more uniform surface to sit on; letting it fully absorb before applying makeup (rather than applying over a wet layer) prevents pilling, where product balls up instead of blending in.
How to do it
- Cleanse to remove any oil, sweat, or residual product from the day or overnight.
- Treat, if needed - spot treatment, exfoliation, or other skincare steps happen here, before moisturizer, not after.
- Moisturize and let it fully absorb. Rushing this step is the most common cause of makeup pilling.
- Apply primer only if solving a specific problem - texture, oil control, or hydration - rather than as an automatic step.
- Wait a few minutes before starting foundation so every layer has time to settle.
Common mistakes
- Applying foundation immediately after moisturizer, before it's absorbed, which causes pilling and uneven grip.
- Over-exfoliating right before makeup application, which can leave skin irritated or more sensitive to product than usual.
- Skipping moisturizer on oily skin out of a mistaken belief that it will add more shine - under-hydrated oily skin often overproduces oil to compensate, making the problem worse, not better.