A simple eyeshadow look can start with one shade. If you want more definition, add a medium tone in the crease and a darker shade at the outer corner. Treat the steps below as one approach to try, rather than a rule for every eye shape.
Choose a small set of tools
Use an eyeshadow intended for the eye area, an applicator or small brush, and a soft brush for blending. Professional brushes, a four-colour palette, eyeliner and mascara are optional. If you use primer, follow its eye-area directions.
Start with clean hands and tools
The FDA advises washing your hands, keeping eye-area tools clean and avoiding shared cosmetics. Check that the product is intended for use near the eyes; a colour approved for another cosmetic use is not necessarily suitable here. Avoid makeup on infected eyes or inflamed surrounding skin.
Apply a light base
Place a small amount of your chosen base shade on the lid. Look straight into a mirror, then close the eye briefly to check the coverage. Build the colour gradually if you want a stronger result.
Add definition where you want it
For a soft shadow, blend a medium shade just above the lid fold. If your crease is less visible, experiment with placement while your eyes are open. You can stop here or add a little darker shadow at the outer corner, keeping the brush away from the eye itself.
Blend the edges
Use a clean blending brush with light strokes where the shades meet. Keep the colour where you want it rather than blending until it spreads across the whole eye area. A cotton pad with an appropriate remover can help tidy a misplaced edge; follow the remover’s directions.
Make the finishing steps optional
A lighter shade beneath the brow can add contrast if you like that look. Shimmer, liner and mascara are choices, not requirements. Use each product only as directed, and do not assume craft glitter or a non-eye pigment is suitable for the eyelids.
Stop if your eyes become irritated
Stop using a cosmetic that causes irritation; seek medical advice if it persists. The FDA also advises discarding eye cosmetics used during an eye infection and waiting until the area has healed before using eye makeup again.
Source: FDA: Eye Cosmetic Safety.
