•1. All items sold in my shop are 100% original and in stock;2. We will arrange the shipment within 1-3 days from China,except the holidays;3. Items will be in good condition before shipping, don't worry the quality;4. Usually it takes 7-14 days for parcel to your address, please be patiently;5. If you like the item after receive the parcel, please leave us positive feedback, thanks.Contact us freely if you have any questions.Packing list :10 pieces/5 packs ; 20 pieces/10 packsPlease read instructions carefully before using. Slight discomfort is common but in most cases it won't harm your teeth and gum. You can pause for 2~3 days before second use. If your teeth or gum are still in aches and pains, please stop using it.Application:1.Extrinsic tooth discoloration2.Intrinsic tooth discoloration(Mild fluorosis or tetracycline staining)3.Genetically yellow teeth4.Other cause of teeth discoloration5.All the people who want a whiter & brighter smileSafety Warning1. Keep out of reach of young children. Product is not intended for use in children under the age of 12.2. Do not swallow plastic strip.3. Crest 3D White Whitestrips is not a substitute for regular dental care. Visit your dentist regularly.4. Avoid contact of gel with eyes, cloth, leather, or fabric.