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: Click to share on Facebook (Opens in new window) Facebook Click to share on Pinterest (Opens in new window) Pinterest Click to share on X (Opens in new window) X Click to share on Tumblr (Opens in new window) Tumblr Click to share on WhatsApp (Opens in new window) WhatsApp Click to share on Reddit (Opens in new window) Reddit