“Using too much coconut oil on your hair may weigh it down, so start off with a small amount and adjust as necessary,” advises Anabel. Those with finer hair or naturally oily scalps may find their hair looks and feels greasy after use.

Even if you're not dealing with hair loss or shedding, rosemary oil products can still deliver some ingredient benefits to your strands: 'Hair oils, including rosemary oil, are also great for those looking for natural approaches to growing smoother, softer, more manageable hair,' says board-certified dermatologist Dr. Brendan Camp, MD.

Give your hair the love and care it deserves with the best hair oil for hair growth. Explore the top picks of 2025 for healthier, thicker tresses.