Pigmentation on sides of nose, forehead.

Sir/madam, pigmentation of sides of nose and forehead along with thickening of skin from past 3 years...1)))))"FIRST CONSULTATION":---2 years past I consulted a doctor and undergone 2 chemical peeling sessions and used depiwhite and sunscreen,initially results were Good and later on my skin had undergone resistance to depiwhite cream when ever I applied my skin becoming even more darker.. 2))))"SECOND CONSULTATION":-2017 October I consulted another doctor where "Prognoses" was "FACIAL ACANTHOSIS" AND "LPP"and than prescribed me a)Oliva cleanser. b) Oliva skin lightening cream.c) h to Oliva skin lightening cream. OTHER FINDINGS:- noticed t pigmentation at 1) cubital fossa 2) popliteal fossa 3) at waist circumference area.. Currently I am using depiwhite my skin undergone more pigmentation.sir,please help me out of this and prescribe some good medications. I'm on verge of lowering my self esteem.please, I'm currently in college.so,I cannot go near a dermatologist and please sir helpme