Colgate says that all toothpastes are graded ... the likely culprit is the peroxide that acts as the main ingredient to help bleach the tooth's surface. 'The peroxide can irritate the tooth's ...
Colgate says that all toothpastes are graded ... the likely culprit is the peroxide that acts as the main ingredient to help bleach the tooth's surface. 'The peroxide can irritate the tooth's ...