Ingrown Armpit Hairs: How to Stop Bumps and Heal in 4–6 Weeks Sep 2nd 2026 THSC Ingrown Armpit Hairs: How to Stop Bumps and Heal in 4–6 Weeks An ingrown armpit hair happens when a shaved or waxed hair curls back and grows into the surrounding skin, triggering a small, irritated bump. Most cases are harmless and clear up on thei Tags: #ingrown hairs armpit