My hair now does this without the flatiron! - Waves in 15 minutes! Section hair into big sections then braid each in a loose braid. Run a flatiron over each braid, let them cool down, spray hairspray and undo the braids.
Hair conditioner: 1 tsp of apple cider vinegar + 1 tsp of glycerin +beaten egg tbsp caster oil. Apply to entire length of the hair. Place hair in plastic cap. Leave mask on for 2 hrs. Wash hair using shampoo.