You should not be using your fingers to apply your makeup
It appears quite reasonable that many cosmetic companies want to sell their products, which is why they continually urge people not to apply makeup with their bare fingers. However, it turns out that this is not a trick to sell more beauty tools, as applying foundation to the face with your fingertips does not assure even coverage and can even be risky.
Touching your face with your fingers can also make much worst skin conditions such as dermatitis, psoriasis, and eczema. And it is not just bacteria you should worry about. The more you rub your make-up in, the more your pores will become clogged with the oil from your hands. So, instead of using your fingers, consider using a sponge or a foundation brush next time.