Leather protection is a huge waste of money and it does nothing. Do not ever buy these type of extra services/add-ons from your dealer. Very rarely do they provide any benefit and they are always too expensive.
Use the Lexus Brand Leather Cleaning and Conditioner. It is available on SewellParts for less than $20 for both bottles last I checked. It removes blue jean stains effortlessly. If there is a problem with your leather at any point in time you can tell Lexus the only thing you used were their products.
As a side benefit the Lexus conditioner/cleaner smells wonderful