Previous page Next page How soon can I the see results? Results vary by individual. Follow the instructions carefully and you can expect visible results in as soon as 4 weeks. What will happen when I stop using the lash serum? Stopping use may cause your eyelashes to gradually return to their natural state over time. Is the Natuhana eyelash growth serum safe for sensitive eyes? Yes, our eyelash growth serum is safe for sensitive eyes. We recommend always performing a patch test before full application. Does it contain prostaglandin analogues? No, our eyelash growth serum does not contain prostaglandin. We use peptides as the main ingredient in our serum.