Why does under-eye concealer crease?
Almost always product volume rather than product choice. The under-eye moves constantly, and any excess collects in the fold. Dry, unprepared skin grips product unevenly, and skipping the setting step lets it travel. A thin layer of the wrong concealer usually creases less than a thick layer of the right one.
How much should I use?
Less than feels adequate. Apply a small amount in a narrow triangle under the eye, tap it out with a fingertip or damp sponge, and add a second thin layer only where you still see shadow. Do not apply concealer where you have no darkness to cover.
Which formula is least likely to crease?
Lightweight, hydrating liquids with a natural finish. Very matte and full-coverage formulas set firm and show movement more clearly. Thick, waxy formulas cling to texture. If your under-eye is dry, a hydrating formula will outperform a long-wear one.
Does setting powder help or hurt?
Helps, if used correctly. A very small amount of finely milled powder pressed — not swept — over the concealer stops it travelling. Too much powder is drying and makes creasing more visible, not less.
What else should I look at?
Apply eye care first and let it absorb. Browse the full face makeup range for concealers and powders.