Scars can arise from acne, burns, cuts or from other causes of trauma to the skin. Over-the-counter scar creams may take longer to work than a prescription strength medication, if they work at all. Your dermatologist or primary care physician can prescribe effective creams to treat your scars.

Tretinoin

Tretinoin is derived from vitamin A and is also known as Retin-A, according to the University of Maryland Medical Center. Vitamin A helps skin heal and grow. Tretinoin is often prescribed for wrinkles, age spots, liver spots and scars. Tretinoin helps your skin produce collagen, which is important for scar tissue. Depending upon the size, depth and discoloration of the scar, your doctor may recommend applying tretinoin at least twice per week or more frequently. Tretinoin can cause your skin to become sensitive to the sun, according to the University of Maryland Medical Center. To protect your skin, apply tretinoin at night before bed to decrease risks associated with the sun.

Maderma

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Maderma has been approved for the treatment of scars and stretch marks by the American Academy of Dermatology. Maderma also helps protect your skin from the sun, which increases its effectiveness. Maderma is formulated with SPF 30 for sun protection. The vice president of Medical and Aesthetic Dermatology of Merz, Mikael Svensson, says that Maderma has been clinically proven to reduce the appearance of scars in addition to smoothing and softening the skin. For Maderma to effectively protect your skin from the sun, apply it to your skin at least a half hour before going outdoors, according to the American Academy of Dermatology. If you’re outside for an extended period of time or indulging in water activities, the American Academy of Dermatology recommends reapplying Maderma every two hours for continued protection.

Hydroquinone

Hydroquinone works as a skin bleaching agent, according to DermNet NZ, and can lighten the appearance of scars 1. Hydroquinone is available as a topical over-the-counter medication, available in 2 percent strength 1. For a more potent strength, your dermatologist can prescribe hydroquinone with a concentration up to 4 percent 1. Since this cream has a skin lightening effect, it can fade freckles, scars and age spots. When using hydroquinone, avoid contact with the sun or wear sunscreen if you must be outdoors 1. Hydroquinone contains sodium metabisulphite, which can cause a severe allergic reaction for those who are allergic to this ingredient 1. While wearing hydroquinone, avoid using products containing hydrogen peroxide and benzoyl peroxide, as they can interact with the medication and cause a temporary dark stain on your skin 1.