If the Maalyavaan D-Tan Face Wash website states that returns are only accepted for defective products, you can mention this in a clear and professional way in your return policy section. Here’s an example of how you can write it:

Return Policy:

We do not accept returns for non-defective products. However, if you receive a defective or damaged item, we will gladly replace it. Please contact our support team within 2 days of delivery with proof of the defect for assistance.

This makes the policy clear while maintaining a customer-friendly approach. If you need help refining the wording for your website, let me know!