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It can take up to a year for your brows to fully grow in, but the first few months is the hardest part. Commit to leaving your brows alone for 12 weeks. Avoid plucking, waxing, threading or otherwise grooming your brows during this time.  Use eyebrow pencil and/or powder to fill in patchiness as they are growing. Apply concealer around your eyebrows to cover stubble. Combing your eyebrows helps to stimulate growth. Purchase a spoolie brush from your local beauty supply store, and use it to gently comb your brows daily. This also helps you to manage your brows if they begin to look unruly. Exfoliating your eyebrow area also stimulates the follicles and encourages growth. Purchase a facial scrub or make your own. After cleansing, apply your scrub of choice to your eyebrows and the skin around them. Move it around in circles. Rinse the product off completely. Make sure that the product is completely removed from your eyebrows. Foods that contain omega-3 fatty acids, vitamins E and A, and lactic acid are all beneficial to hair growth. Try to include more foods that contain these vitamins and acids in your diet.  Salmon, walnuts, brussels sprouts, spinach, and kale all have omega-3 fatty acids. Carrots, sweet potatoes, kale, and spinach are all high in vitamin A. Almonds, avocados, tomatoes, olives, and broccoli all contain high levels of vitamin E. The B vitamin called biotin is excellent for helping your hair grow. Eat foods high in biotin and/or consider adding biotin supplements to your diet. Adults should try to consume 25-30 mcg per day. Some foods high in biotin include:  Eggs - 8 mcg per egg Yogurt - 4 mcg per 1 cup (240 ml) Salmon - 4-5 mcg per 4 ounces (110 g) Almonds = 14 mcg per 0.25 cups (59 ml) Daily exercise will get your blood pumping and increase the circulation in your body, which can help your hair grow faster. Daily exercise can also help distribute your hair's natural oils, which can make your hair healthier and encourage new growth. Stress can cause all kinds of side-effects in your body, including slowed hair growth. If you are under a lot of stress, take some steps to try and reduce it. If your stress level is severe, consider consulting a therapist. Some methods of stress management include:  Meditation Yoga Massage Journaling Talking to a friend Going for a walk Hormonal disorders, allergies, other health conditions can lead to slowed hair growth or even hair loss. Additionally, certain medications can lead to hair-related side effects. If you this might be the case for you, visit a doctor to find out.

Summary:
Stop grooming your eyebrows for at least 12 weeks. Comb your brows with a spoolie brush daily. Exfoliate your brow area 3 times a week. Eat foods that encourage hair growth. Eat foods rich in biotin. Exercise daily to improve your circulation. Manage your stress. See your doctor.