hi  Welcome to Healthcare Magic Forum  You seem to have developed superficial skin wound.  I would advise you to keep the area clean and dry. Use an antiseptic solution or lukewarm water to clean the area twice a day  Apply an antibiotic cream like mupirocin gel, as this will decrease the chances of superadded infection as any kind of infection over the affected area will lead to increased chances of scarring and pigmentation.  Take oral antihistamines like levocetrizine once a day to reduce the redness and irritation  You can additionally take oral vitamin C supplementation in order to speed up the healing process.  The wound will heal in a span of 5-7 days if proper care is taken, after that, if any pigmentation persists, then you can apply a mild lightening agent containing kojic acid over the lesion till the skin color returns back to normal . Hope it helps  Dr Geetika Paul MD( Dermatology)