The most commonly used AAS in medicine are testosterone and its various esters (but most commonly testosterone undecanoate , testosterone enanthate , testosterone cypionate , and testosterone propionate ),  nandrolone esters (most commonly nandrolone decanoate and nandrolone phenylpropionate ), stanozolol , and metandienone (methandrostenolone).  Others also available and used commonly but to a lesser extent include methyltestosterone , oxandrolone , mesterolone , and oxymetholone , as well as drostanolone propionate , metenolone (methylandrostenolone), and fluoxymesterone .  Dihydrotestosterone (DHT; androstanolone, stanolone) and its esters are also notable, although they are not widely used in medicine.  Boldenone undecylenate and trenbolone acetate are used in veterinary medicine . 
You can buy some topical corticosteroids "over-the-counter" without a prescription. For example, for dermatitis, you can buy the steroid cream called hydrocortisone 1% from your pharmacy. Do not apply this to your face unless your doctor has told you to do so. This is because it may trigger a skin condition affecting the face ( acne or rosacea. ) Long-term use may also damage the skin. On your face this would be more noticeable than the rest of your body. So usually only weak steroids are used on the face. Those which are suitable are prescription-only.
I colored my hair today and had a terrible reaction. When I was in highschool I would color my hair and nothing would happen. I colored my hair about 7 years ago and had a terrible reaction ) eyes closed, head swole up terribly), then about 5 months ago I colored my hair at home and had an even worse reaction. I didn;t think it was the dye and I tried again at the salon. Needless to say I an suffereing from weeping swelling and soine itching. Honestly it’s not as bad as the first or second time. I wiped my scalp with peroxide and have been using olive oil to keep it from getting too stiff. I WILL NEVER try it again. I just pray I make it through this one. It really isn;t worth it.