变性乙醇的风险
变性乙醇听起来好像没那么直接,但是其存在也有着莫名的风险。美国化妆品成分审查专家委员会-CIR Expert Panel 曾对其作出一个耐人寻味的判断:变性酒精安全与否取决于加入何种变性介质。
乙醇变性的添加物质种类颇多,部分得到安全的证实,而还有很大一部分数据不齐全,无法给出安全性的判断。
也就是说,酒精如何被变性?用了多少变性物质?很多时候我们处在一个未知的状态,未知也就意味着风险。
而变性酒精的应用,往往是在酒精含量较高的化妆品中...
风险 风险=?后面我就不说了。
3.酒精究竟还能不能用?
这如同我们之前探讨的化妆品致痘成分的问题。要考虑的不仅是该成分本身,还有其他因素需要考量。
能用?
除却整体配方的影响单看酒精本身,如果只是作为溶剂,化妆品中含1%-2%个位数的添加量时,酒精本身对整体皮肤的影响就微乎其微了。
甚至一些敏感肌可以使用的产品中,也会存在微量的酒精添加。
因而,添加量,是需要着重考虑的因素。
不能用?
但是对于很多大量添加酒精甚至以酒精作为主要添加剂的化妆品,我们就一定要小心了。
比如许多主推控油功效的产品中,酒精几乎是其中大拿。
但是讲真,酒精只能短时间改善皮肤油光的问题,“控油”完全是扯淡。
如果经常使用酒精含量偏高的化妆品就可以去参考参考上面的酒精添加剂危害部分了。
所以说...
所以说,酒精究竟对皮肤有没有害,还是要看含量和浓度,个位数的含量虽说对皮肤的影响微乎其微,但是不排除其他刺激的可能,最终还是要看试用后的皮肤反应。
但像那些酒精含量偏高的产品,敏感肌能避免还是乖乖避免了。皮肤没什么大毛病的人也别多用,参考下潜在风险看看?
有句广告说的好:XX虽好,不要贪杯。
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本文数据更新于2020年06月05日
由「皮肤科杨希川教授」原创,旨在为读者进行科普
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