![WomanAppliesCreamProfile850](https://img.cosmeticsandtoiletries.com/files/base/allured/all/image/2017/09/ct.CT1709_Maibach_850x850_pic1.png?auto=format%2Ccompress&q=70&w=700)
*Adapted with permission from M Rule, K Saliesh, T Haw-Yueh, H Zhai and HI Maibach, Percutaneous Penetration Enhancers: An Overview, in Handbook of Cosmetic Science and Technology, 4th edn, CRC Press, Boca Raton, FL (2014) pp 141-156
*Adapted with permission from M Rule, K Saliesh, T Haw-Yueh, H Zhai and HI Maibach, Percutaneous Penetration Enhancers: An Overview, in Handbook of Cosmetic Science and Technology, 4th edn, CRC Press, Boca Raton, FL (2014) pp 141-156