Here is the correct way to use setting powder:
Setting powder comes into play after you have applied your base makeup. Its purpose is to lock the makeup in place and extend its longevity. After applying your base, lightly dust on a layer of setting powder using a puff or brush; this ensures subsequent makeup applies more evenly, prevents smudging, and gives the base a cleaner, more polished look.
You can also apply setting powder after completing your full makeup look. Again, lightly dusting it on with a puff or brush helps the entire look last longer. However, be careful not to apply too much, as a heavy layer can make the makeup look cakey or unnatural.
Setting powder is also useful for touch-ups. After wearing makeup for a while, your face may start to get oily. You can touch up with liquid foundation or a cushion compact, then use setting powder to control oil. This effectively manages shine and helps your makeup stay put.
Keep the following points in mind when using setting powder. First, when using a puff, press the powder gently onto the skin rather than rubbing or wiping it, as rubbing can disturb the base makeup underneath. Second, the T-zone is the area most prone to oiliness, so focus your application there. Finally, remember to touch up as needed. This is especially important in summer; exposure to high temperatures, direct sunlight, and humid air can cause the face to become oily in as little as 15 minutes, so it is best to carry the product with you for easy touch-ups.
You do need to remove your makeup after using setting powder. If you have applied a full face of makeup with setting powder, use micellar water or cleansing oil to dissolve and remove the products, followed by a facial cleanser for a thorough cleanse. If you have only used sunscreen and setting powder, a facial cleanser alone is sufficient.
In short, using setting powder correctly helps your makeup look natural and last longer. When using the product, focus on key techniques such as applying it with a gentle pressing motion, setting your makeup thoroughly, and touching up as needed; additionally, ensure you cleanse your skin properly to avoid any adverse effects.