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All the specimens were bleached with 40% hydrogen peroxide (Opalescence Xtra Boost 40%, Ultradent, South Jordan, UT, and USA) as per the manufacturers instructions
Timing It begins shortly after you start the new serum
Avoid heat and direct sunlight
The Role of Supporting Ingredients with Glutathione While Glutathione alone is effective, its performance improves significantly when combined with complementary ingredients
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