Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain Triamcinolone Acetonide is a Steroid and skin darkening is a side effect of topical steroids therapy. You should consult a Dermatologist and get evaluated and he can advise you to completely stop Steroid use.. He can advise you safer skin lightening agents like Kojic Acid containing creams a d Vitamin E gel... Certain procedures like Chemical peel and Microdermabrasion can also be advised.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.