Red pimple marks on the face are due to the expansion of blood vessels caused by inflammation at the original acne site. The blood vessels do not retract immediately after the acne is eliminated, resulting in flat, reddish, temporary red pimple marks that deepen in color when the skin temperature rises or during exercise. Red acne marks are not scars and can gradually fade away within six months. If you want to avoid red acne marks, you need to actively treat the primary skin disease to avoid the further development of acne inflammation and red acne marks. Once red acne marks appear, topical salicylic acid can be applied topically to induce inflammation to subside; fractional laser treatment can also be used to improve the effect, which can shrink microvessels and lighten acne marks to achieve the ideal elimination effect, but multiple treatments are required. At the same time of treatment, you should maintain good living habits and use warm water to cleanse your face, which can promote vasoconstriction. Eat less or forbid stimulating food, combine work and rest, avoid staying up late, and at the same time, you should eat more fruits and vegetables containing vitamin C, such as spinach and oranges. You can also use maintenance products or exfoliating products that contain fruit acids to help renew the skin and improve the pigmentation after acne. However, it should be noted that sun protection should be done after phototherapy or in daily life to avoid long-term exposure to UV rays, which may aggravate hyperpigmentation.