HOW TO GROW BACK YOUR EYELASHES!! 1: get Vaseline/petroleum jelly and eyelash brush. 2: get an eyelash brush from Sally's, Marshall's, or use a fully cleaned off old one. 3: get a fair amount of jelly onto the brush and use your fingers to rub it into the bristles. 4: apply like normal mascara and DONE!!:) Repeat on a daily bases.