You can also send an e-mail to the support team of Nykaa or can chat with the customer care representative in the mobile app. Also, customers/sellers can file an online complaint on the official portal or mobile app.
If you have any complaint about the product and services that is yet not resolved then you can call on the toll-free customer care numbers or other official helplines of Nykaa. You can also e-mail or register an online complaint to the higher authorities.