Understanding the Eucerin WHITE THERAPY Spot Corrector Formula

You've had a good experience with the Eucerin WHITE THERAPY Spot Corrector, and you're right, it's a potent product. As the staff mentioned, the primary active ingredient for targeting melasma in this formula is Activated Resorcinol (4-Butylresorcinol).

• Activated Resorcinol is a highly effective ingredient known for its ability to significantly reduce pigmentation. It works by inhibiting the enzyme (Tyrosinase) responsible for melanin production and also helps prevent pigment from transferring to the skin's surface. It is considered more effective than some other common whitening agents like Vitamin C or Arbutin.
• The formula also contains Glycyrrhetinic Acid, which is derived from licorice. This ingredient is excellent for its anti-inflammatory and anti-irritant properties, helping to soothe the skin and potentially counteract any irritation from the active whitening ingredient.

Regarding deep melasma ("เงาฝ้า"), while Activated Resorcinol is powerful, deep pigmentation can be challenging to treat. The Eucerin formula provides a strong foundation with its key active. However, for more stubborn or deep melasma, a multi-ingredient approach can sometimes yield better results.

Consider adding ingredients that work synergistically with Activated Resorcinol. For example:

• Niacinamide (Vitamin B3): This ingredient helps reduce the transfer of pigment within the skin cells and improves the skin barrier. It is compatible with Activated Resorcinol.
• N-Acetyl Glucosamine: Often used alongside Niacinamide, it also helps reduce hyperpigmentation. It is compatible with Activated Resorcinol.

Combining Activated Resorcinol with ingredients like Niacinamide or N-Acetyl Glucosamine could potentially offer a more comprehensive approach to tackling deep melasma.

Remember that treating melasma, especially deep melasma, requires patience and consistency. Results typically take several weeks to become noticeable. Protecting your skin from the sun daily with a high-SPF sunscreen is also absolutely crucial, as UV exposure is a major trigger for melasma.

If your deep melasma is particularly persistent, consulting a dermatologist is always recommended for personalized advice and treatment options.