How long does my hair have to be to 360 get waves? How Long Does My Hair Have To Be To Get Waves? It Depends on individual hair growth and brushing schedule. Share this: Share on Facebook (Opens in new window) Facebook Share on Pinterest (Opens in new window) Pinterest Share on X (Opens in new window) X Share on Tumblr (Opens in new window) Tumblr Share on WhatsApp (Opens in new window) WhatsApp Share on Reddit (Opens in new window) Reddit