Unfortunately, if the products you apply to your skin, such as chemical-containing foundation, makeup, primer, are not cleansed, your skin cannot do the breathing feature it needs the most, at an adequate level. On a skin that is not cleaned, maybe you may not encounter any negatives in the short term, but in the long term, there will definitely be negatives consequences that will manifest themselves on your skin. Moreover, some negativities may not have any returns. In addition to the concealers and foundations on your skin being chemical products, bacteria in the environment you are in also trap substances such as cigarette smoke into your skin. Isn't it terrible to even imagine that this dirt stays with your skin all day long? We think you don't want to have countless bacteria and germs on your face. Let your skin breathe by not keeping your makeup on your skin for a long time! We can say that the most well-known effects seen on skin that is not cleaned at night, pores expand, black spots, textures increase, and the skin becomes open to irritation.