Tooth whitening lightens teeth through chemical degradation of chromogens. Hydrogen peroxide is most commonly used active ingredient in whitening products. Treatment effectiveness depends on time exposure and bleaching concentration
Personal care products clean and protect body parts for hygiene and health. Toiletries form narrower category for basic daily hygiene. Cosmetics enhance appearance, pharmaceuticals are not personal care. Global market size several hundred billion US Dollars
Humans have four types of teeth: incisors, canines, premolars, and molars. Teeth function to mechanically break down food for digestion. Humans have 20 primary teeth and 32 permanent teeth. Teeth are made of enamel, dentin, cementum, and dental pulp
Whitening toothpastes work through mechanical abrasives or chemical bleaching. Products were tested over four weeks using ADA shade guide. Most formulas contain fluoride and hydrated silica for teeth health
Mix 1 part hydrogen peroxide with 4 parts baking soda for teeth whitening. Use ADA-approved toothpaste containing baking soda. Brush teeth twice daily for at least 2 minutes. Floss daily to remove plaque between teeth
Brush teeth for at least half an hour before applying strips. Apply gel side of strips to teeth surface, avoiding gums. Dry teeth surface before application. Wait 30 minutes for strips to work