Ultraderm Lux If you intend to make use of fake eyelashes, your nightmare would be discovering an allergy to the glue. Test out the product on your arm first to determine if you are allergic. Then place plaster on that and let it sit for 24 hours. Take note of whether you have any rashes. If not, then you are good to go.Use matte instead of shimmer blush unless your skin is blemish-free and flawless. Shimmer blushes accentuate imperfections. However, you can make your skin look flawless with matte blushes, which cover up blemishes better.