The most common cause of skin redness is skin sensitivity. Sometimes you’re simply born with sensitive skin, but in many cases skin sensitivity is caused by stress, environmental pollution and the use of unsuitable or too aggressive skincare.
Redness can be a sign of inflammation! In this case you’ll also feel pain and the skin will be hot to touch in the inflamed area. Inflammation is typical for acne and some other skin conditions, such as erythema. Redness, often quite vivid and persistent, can be a symptom of rosacea.
In most cases rosacea-related redness looks symmetrical and spreads over the central part of the face, including nose and sometimes forehead and eyelids. This skin condition requires consulting a dermatologist and medical treatment.
Red skin can also be caused by irritation and skin injury, for example from excessive use of exfoliants, primarily with AHA/BHA. The use of brushes and mechanical devices for skin cleansing can lead to irritation too. Finally, an overly zealous or unwarranted application of retinol is a common cause of persistent redness and increased skin sensitivity.