The RHA Collection is made up of 4 different types of formulas, which can be customized based on the patient’s needs. RHA filler... is FDA-approved to treat facial wrinkles such as nasolabial folds, smile lines, bags under the eyes, lip lines, and more. It is safe for all skin types in adults of 22 years old and up. You should not undergo treatment without speaking with a licensed professional about personal allergies, medical conditions, etc.