Costa Adilson, Moisés Thaís Abdalla, Cordero Tatiana, Alves Caroline Romanelli Tiburcio, Marmirori Juliana
Universidade de São Paulo, Brazil.
An Bras Dermatol. 2010 Sep-Oct;85(5):613-20. doi: 10.1590/s0365-05962010000500003.
Melasma is a common skin pigment disorder with a difficult clinical response to treatment.
To evaluate the clinical efficacy and safety of the association of Belides, Emblica and Licorice 7%, compared to Hydroquinone 2%, in the treatment of melasma.
After 60 days of exclusive use of an SPF35 sunscreen, 56 women, 18 to 60 years of age, phototypes I to IV, with epidermal or mixed melasma, were divided into two different groups in a mono-blind clinical study: A) cream with Belides, Emblica and Licorice, applied twice a day; B) cream with Hydroquinone 2%, used at night. They were observed in a 60-day study; every 15 days, they were submitted to medical evaluation, self-evaluation, and photographic registration (Visia(®)).
50 volunteers (89%), 23 in Group A and 27 in Group B, concluded the study. Two volunteers in Group A and 7 in Group B had mild skin adverse events. Depigmentation was observed through medical evaluation (Group A: 78.3%; Group B: 88.9%) and volunteers' self-evaluation (Group A: 91.3%; Group B: 92.6%); these results were statistically significant (p<0.001), with no differences between groups (p>0.05). This pattern of results was observed by Visia® in the number (p = 0.001) and size and tone (p<0.001) of the uv stains, for both groups, with no differences between them (p>0.05).
There were no statistic differences between groups in the improvement of melasma. Group A showed less skin adverse events. Therefore, the association of Emblica, Licorice and Belides is a safe and efficient alternative for the treatment of melasma.
黄褐斑是一种常见的皮肤色素沉着紊乱疾病,临床治疗反应不佳。
评估7%的光果甘草、余甘子和熊果苷组合与2%的氢醌相比,在治疗黄褐斑方面的临床疗效和安全性。
在仅使用防晒系数为35的防晒霜60天后,将56名年龄在18至60岁之间、皮肤光类型为I至IV型、患有表皮型或混合型黄褐斑的女性,纳入一项单盲临床研究,分为两个不同组:A组:每天两次涂抹含有光果甘草、余甘子和熊果苷的乳膏;B组:每晚使用含2%氢醌的乳膏。在为期60天的研究中对她们进行观察;每15天,对她们进行医学评估、自我评估和拍照记录(Visia®)。
50名志愿者(89%)完成了研究,A组23名,B组27名。A组有2名志愿者,B组有7名志愿者出现轻度皮肤不良事件。通过医学评估(A组:78.3%;B组:88.9%)和志愿者自我评估(A组:91.3%;B组:92.6%)观察到色素沉着减退;这些结果具有统计学意义(p<0.001),两组之间无差异(p>0.05)。两组在紫外线色斑数量(p = 0.001)以及大小和色调(p<0.001)方面,通过Visia®观察到的结果模式相同,两组之间无差异(p>0.05)。
两组在黄褐斑改善方面无统计学差异。A组皮肤不良事件较少。因此,余甘子、甘草和光果甘草的组合是治疗黄褐斑的一种安全有效的替代方法。