Hello. Thanks for writing to us at healthcaremagic You have developed Irritant Dermatitis to the hair removal cream, likely because you left it for too long. Redness, blisters, burning sensation are all part of the dermatitis. As a general instruction hair removal creams should be applied for 4-5 minutes and the time should never exceed more than 10 min. If I was the treating doctor, I would have asked to use a moderately potent topical steroid e.g fluticasone propionate 0.05% cream, twice daily for a few days. Steroids are antiinflammatory and would help resolve the dermatitis. These are prescription drugs and I would suggest that you talk to your dermatologist for the needful. An OTC oral antihistamine e.g cetrizine 10 mg once daily would also be useful and help resolve the dermatitis. Regards