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SkinCited

Hyperpigmentation
Hyperpigmentation

Tỷ lệ mắc: Melasma affects 15-50% of pregnant women; PIH common in darker skin tones (Fitzpatrick IV-VI)

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Evidence-Ranked Ingredients

Thành phần Xếp hạng Nghiên cứu Xu hướng
Glutathione C 6 Positive Xem →
Pine Bark Extract (Pycnogenol) C 4 Positive Xem →
Polypodium leucotomos C 3 Positive Xem →
Grape Seed Extract C 3 Positive Xem →
N-Acetyl Cysteine C 3 Positive Xem →

About

Excess melanin deposition in the epidermis or dermis, resulting in darkened patches. Major subtypes include melasma (hormonally driven), post-inflammatory hyperpigmentation (PIH), and solar lentigines (sun spots). Involves upregulation of tyrosinase and melanosome transfer to keratinocytes.

Common Symptoms

Dark patches on face (melasma: cheeks, forehead, upper lip) Dark spots at sites of prior acne or injury (PIH) Age spots (solar lentigines) Uneven skin tone

Risk Factors

  • Sun exposure
  • Hormonal changes (pregnancy, oral contraceptives)
  • Skin inflammation or injury
  • Darker skin tones
  • Family history
  • Certain medications

Frequently Asked Questions

What supplements are studied for Hyperpigmentation?
Research has examined 5 supplement ingredients for Hyperpigmentation, including Glutathione. Evidence strength varies; review individual grades for details.
How is the evidence for Hyperpigmentation supplements graded?
We grade supplements on an A-F scale based on clinical study quality, consistency of results, sample sizes, and study design. Grade A indicates strong evidence from multiple clinical trials, while Grade D indicates preliminary evidence requiring further research.
How many studies on Hyperpigmentation supplements have been reviewed?
Our evidence grades for Hyperpigmentation are based on a total of 19 peer-reviewed studies across 5 ingredients. Studies are sourced from PubMed and include randomized controlled trials, meta-analyses, and other clinical research.
What are common symptoms of Hyperpigmentation?
Common symptoms associated with Hyperpigmentation include Dark patches on face (melasma: cheeks, forehead, upper lip), Dark spots at sites of prior acne or injury (PIH), Age spots (solar lentigines), Uneven skin tone. If you are experiencing these symptoms, consult a healthcare professional for proper diagnosis and treatment options.

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