No, hydrogen peroxide with baking soda does not lighten blemishes on the skin. The hydrogen peroxide can only lighten the hairs and the bicarbonate would act as an exfoliant, but the mixture is not able to lighten blemishes on the skin and is contraindicated, as it may make the picture worse.
Hydrogen peroxide (hydrogen peroxide) has disinfectant action, being itself to kill bacteria and not to be used as a cosmetic. She lightens hair and hair because it breaks down the melanin, the substance responsible for the color of the skin, hair and hairs.
However, hydrogen peroxide is very abrasive and highly irritating to the skin. If it is used to lighten blemishes, it will irritate the skin and probably cause an injury and a burn.
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With this, the skin, in an attempt to heal this irritation, can make the stain even darker and mayr. If it is not face, for example, where the skin is more sensitive, can bring more serious damage.
Even hydrogen peroxide diluted in water or softer versions, such as the 10-volume, is not recommended for dermatological treatments. All of them pose a risk of irritation and burns to the skin.
To lighten blemishes on the skin, it is best to seek doctor / dermatologist, which will identify which type of stain and prescribe an effective treatment for your bleaching.
