At 22, the most common causes of dark under-eye circles are not the same as in older patients, and the treatment pathway is different. Common causes in young patients: Genetic pigmentation. Some skin types (especially Mediterranean, South Asian, Middle Eastern, African) have naturally more melanin in the lower lid skin. This shows as a brownish discoloration that's not really a shadow. Vascular shadowing. Thin lower lid skin reveals the underlying vasculature, creating a bluish-purple appearance. More visible when tired or dehydrated. Tear trough hollowing. Even at 22 some patients have a genetic depression at the medial lower lid, which casts a shadow that looks like a circle. Mild fat herniation. Some young patients have early fat protrusion that creates a small bag, with the shadow below. Treatment approach depending on cause: Pigmentation: brightening creams (kojic acid, niacinamide, alpha arbutin), professional treatments (TCA peels in trained hands, PRP), and consistent SPF. Avoid hydroquinone long-term in young skin. Vascular: PRP injections can thicken the overlying skin and reduce the visible vessels. Several sessions are usually needed. Tear trough hollow: very conservative HA filler placed deep against bone. Done well, it transforms the appearance. Done poorly, it migrates and creates puffiness. Fat herniation: at 22, a transconjunctival lower blepharoplasty with fat repositioning is appropriate only if there's a true bag with definite fat herniation. This is rare at your age and most patients in their 20s do better with conservative options. Honest read: I'd avoid surgery as a first move at 22 unless there's clear fat herniation. Start with topical brightening and a consultation with an experienced injector who can examine you at rest and on animation. Many young patients improve significantly with non-surgical management.