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Professional treatments like IV drips or injections may show quicker results, but topical products generally take a bit longer and require patience

Start with one new product at a time, then watch for redness, itching, bumps, or dryness over a full week

The Beauty IV includes both at high concentrations

At the end of the evaluation period, the results showed a significant improvement in the skin tone, which was accessed by a hyperpigmentation tool known as the Taylor Hyperpigmentation scale

[13] [15] Rare but serious side effects include hypersensitivity reactions, such as urticaria, angioedema, or anaphylaxis, which require immediate medical attention

4, 2006, pp