Because most drops are limited, made-to-order runs, return policies are set individually by each artist. Check the artist's storefront or the confirmation email from your order for their specific policy.
If an item arrives damaged or isn't what you ordered, contact the artist directly with your order details and a photo of the issue — most artists will happily replace or refund it.
Since drops are time-limited and produced in small batches, many artists are unable to accept returns for a simple change of mind. Always check the artist's return policy before buying.