Afro-textured hair grows about 6 inches per year (yap!) so it is possible to grow it long. Retaining length is normally the issue coz our hair is fragile. The secret is caring for the hair that is furthest from your scalp because this is the most fragile. To care for it, moisturize your hair regularly and deep condition often. Detangle gently while your hair is wet. Work in sections using your fingers to take out knots before using combs. Detangling manages knots which cut hair. Massage your scalp regularly to encourage blood flow to the scalp.Take advantage of home-made products like black tea, green tea, rice water, or vinegar rinses which soften and strengthen hair. These products work and there are several tutorials on YouTube that you could follow. Don't be afraid to trim once every 6 months to remove split ends. Don't wear your hair down every day of the year. Instead, use protective styles. Last but not least, commit to your hair-care routine and you'll be looking at a minimum of 6 inches in the next year! All the best