This offer has been extended from it's earlier claim-by date, but is the exact same deal, otherwise, including the expiration date. If you've already claimed the earlier deal, you'll get sent the exact same coupon code this time, so I don't think you'll be able to take advantage of the deal twice.
This offer is only for those with a Kindle with Special Offers (including any Kindle Touch or Kindle Keyboard that opts in to Special Offers, which means you can add the offers, grab this one, then turn them back off!):
Exclusive savings on select Neutrogena® products
(Get $10 Off a $30 Purchase of Select Neutrogena® Items)
Click on offer, then click on the link on the offer page to receive an email with the promo code. Sign-up for this offer expires on May 9.
You'll get an email (right away), a link to the Special Offer page and a promotion code to enter at checkout. Once you have the promotional code, you have until May 25, 2012 to complete your purchase. Like previous offers, this one requires you to use the full checkout process in order to enter your promotional code. Also, like all Amazon sales that use promotional codes, if you have a gift card balance, you must use it for the payment (if there is not a sufficient balance, then you can pick which credit card or other payment to use).
Limit one offer per customer and per device.