The body forms scar tissue over an injury as a way to protect it as it heals. But people form scars differently -- for example, you might get large and visible scars while others form very little scar tissue. There are a few effective ways to lighten scars.
Pour a little lemon juice onto a cotton ball and apply it to your scar. Reapply lemon juice every day. Don't wash it off. Lemon juice is well-known as a natural bleach for freckles, age spots and other skin discolorations.
Apply a cream or lotion made with glycolic acid or lactic acid. Use the cream or lotion once a day for best results. Glycolic acid and lactic acid are both alpha hydroxy acids or AHAs. These natural products exfoliate your skin, removing the top dead skin layer. This accelerates new skin growth which is lighter in color and more similar to your original skin tone.
Schedule a chemical peel. Dermatologists, plastic surgeons and beauty salons use a higher concentration of AHAs for chemical peels. The acids peel the skin layer at a deeper level. This exfoliation allows newer skin to grow that has less noticeable scars. According to the American Society of Plastic Surgeons in its article "Chemical Peels," when using AHAs a series of peels may be needed, usually spaced a few months apart. This is the best way to make the scars less visible. It is an expensive but effective process.