11 Beauty Products Your Grandmother Used That Still Work Better

5. Castor Oil — Lash, Brow and Scalp Strengthener

Castor oil is a thick oil grandmothers often recommended for hair growth and strengthening. Applied carefully to eyelashes or eyebrows, many people use it to condition hairs and support fuller-looking brows over time. For the scalp, a small amount massaged into dry areas can help with scalp health and reduce breakage in some hair types. The active fatty acid in castor oil—ricinoleic acid—has been associated with anti-inflammatory effects in topical studies, which helps explain its long-standing use. Safety is key: avoid getting castor oil directly into the eyes. Use a clean spoolie for brows and a tiny amount for lashes, and remove gently each morning. If you have sensitive skin or are prone to eye irritation, consult a professional before attempting concentrated oil treatments near the eyes.