What otc use to help with redness in face?

None???: Your post is unclear; "redness" in the face can be anything from sun exposure; to something more serious like dermatitis; or lupus...Best to have your doctor 'eyeball' this in order to get adequate evaluation and treatment.

What part of face?: Where in the face is the redness?If you have redness in the nasolabial folds and the hair line is probably seborrheic dermatitis. If you have redness in the malar area ( butterfly shape both cheeks and nasal bridge ) may be rosacea, lupus or others. Redness is also a sign of cellulitis ( infection of the skin). Acne may cause red spots too. Telangiectasias (spider veins) are red too.

Many things: I agree. Redness can be from exposure, medication side effects, allergic reactions, eczema, rosacea, contact, trauma from aggressive cleaning to more serious conditions like autoimmune diseases. Have your primary care physician do a history and physical exam.