Ascorbyl Glucoside–Arginine Complex Improves Solar Lentigos
Author Information
Author(s): Takada Mariko, Numano Kayoko, Nakano Masahiko, Yamamoto Akio, Imokawa Genji
Primary Institution: Center for Bioscience Research and Education, Utsunomiya University
Hypothesis
Can the ascorbyl glucoside–arginine complex (AGAC) effectively reduce pigmentation in solar lentigos?
Conclusion
The study found that AGAC significantly reduces pigmentation in solar lentigos without causing skin irritation.
Supporting Evidence
- The test lotion showed significant decreases in pigmentation scores at 12 and 24 weeks.
- Instrumental evaluations confirmed the effectiveness of AGAC in reducing pigmentation.
- No skin irritation or hypo-pigmentation was reported during the study.
- AGAC was well tolerated by all participants over the 24-week treatment period.
Takeaway
This study shows that a special lotion can help lighten dark spots on the skin caused by the sun, and it doesn't hurt the skin.
Methodology
A double-blind half-face study where 27 Japanese females applied lotions with or without 28% AGAC twice daily for 24 weeks.
Potential Biases
Potential bias due to the subjective nature of some evaluations and the small sample size.
Limitations
The study was limited to a small sample size of Japanese females and may not be generalizable to other populations.
Participant Demographics
27 Japanese females aged over 40 with solar lentigos.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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