• Salicylic acid is a keratolytic (peeling agent). Salicylic acid causes shedding of the outer layer of skin.
• It treats pimples (acne) by penetrating into the skin and killing acne-causing bacteria. It additionally reduces oil production in the skin, replenishes acne-prone skin, and it also keeps your pores open.

Salicylic acid topical (for the skin) is used in the treatment of acne, dandruff, seborrhea, or psoriasis, and to remove corns, calluses, and warts.

• Skin irritation,
• Hypersensitivity,
• Dry skin,
• Erythema (skin redness)

• This medicine should not be used to treat genital warts, warts on the face, warts with hair growing from them, warts in the nose or mouth, moles, or birthmarks.
• It makes your skin sensitive towards sunlight. Use protective measures like sunscreen or wear protective clothing. 
• Inform your doctor if you notice unusual dryness, redness and peeling of the skin.
• Do not apply to open wounds or irritated skin.

Clobetasol is a highly potent steroid that helps reduce inflammation in the body.
USES
Clobetasol topical (for the skin) is used to treat inflammation and itching caused
by plaque psoriasis or skin conditions that respond to steroid medication.
The solution is used for scalp problems, the foam is used for mild to moderate
plaque psoriasis, the cream, lotion, and spray are used for moderate to severe
plaque psoriasis, and the foam and shampoo are used for moderate to severe scalp
psoriasis.
Clobetasol is used in the treatment of lichen planus which is an inflammation of the
skin characterized by purplish, itchy, flat-topped bumps.
SIDE EFFECTS
Major & minor side effects for Clobetasol
Burning sensation at the application site
Dry skin
Redness of skin
Itching of skin
Cough
Sore throat
Body pain
Headache

Used in the treatment of skin disease such as psoriasis, rashes, and dermatitis, reducing itching, redness, and swelling.

Eye irritation, dermatitis, headache, hair loss, itching, burning, healing of the skin problems, pus filled blisters on the skin, skin irritation, and dry skin.

• This medicine should be applied as instructed by your doctor. Do not use beyond the prescribed date due to increase in the risk of infections. It should be applied to the affected areas as a thin film, two times daily, or as advised by your doctor.
• Do not use it more often or for longer than advised by your doctor.
• Do not cover the area being treated with airtight dressings such as bandages unless directed by a doctor, If you think the area of skin you are treating has become infected you should stop using Clobetasol and consult your doctor.
• Consult your doctor if your skin condition has not improved after four weeks of treatment. Do not use it for more than 4 consecutive weeks at a time.