It is not true that the sun is good for acne : dermatologists have declared that the sun stresses the skin a lot and is an aggravating circumstance for those with excess sebum, because it stimulates its production and thickens the skin.
In fact, acne-prone skin tends to get relief from a short exposure to the sun. And therefore, after an immediate improvement, the skin begins to thicken and the acne gets worse.
Also be aware that some acne medications can sensitize the skin to the sun and increase the risk of severe sunburn. This is the case with cyclins, benzoyl peroxide and isotretinoid. If you have undergone this type of treatment or if it is in progress, it is essential to protect your skin with a full screen or a cream with a very high protection index such as SPF 50. Choose a non-comedogenic cream.
In the summer it is best to undergo acne treatment in the evening. Also remember to clean your skin thoroughly in the morning. Never stop the treatment, even during the summer.
Also, repeated unprotected sun exposure can cause acne scars to turn brown.