表面活性剂临界胶束浓度对洁面产品性能的影响及优化策略

目前大部分市售洁面产品的核心成分多为表面活性剂,而表面活性剂在其临界胶束浓度附近出现一系列性质的变化会对洁面产品的性能产生影响,其中最明显的就是刺激性和残留。通过简要概述表面活性剂临界胶束浓度与洁面性能的联系,从产品配方角度出发,对在产品制备中降低表面活性剂临界胶束浓度的常用方法进行了归纳总结,并介绍了常用临界胶束浓度测试方法的机制及其优劣势,为打造优异性能洁面提供可行性的建议,并对其未来发展方向进行展望。

低表面活性剂残留洁面的制备及性能研究

通过表面活性剂残留测试研究,优选低残留的表面活性剂。其中,选择椰油酰甘氨酸钾作为主要表面活性剂,选择椰油酰两性基二乙酸二钠、月桂基甘醇羧酸钠作为辅助表面活性剂,选择水辉石加作为辅助清洁剂。经过测试发现,制得的洁面产品能够大大降低洗后表面活性剂在皮肤的残留,大大提升产品的温和性,有效降低洁面产品中表活残留对皮肤造成的长期伤害。

皂基/氨基酸复配型洁面产品的性能研究

根据洁面的开发需求,筛选了合适的皂基型表面活性剂和氨基酸型表面活性剂,制得纯皂基型、纯氨基酸型以及皂基/氨基酸复配型(简称皂氨型)洁面产品,采用人体法评测,结合皮肤染色残留实验,皮肤天然保湿因子和脂质溶出实验,对3种产品的保湿、控油、温和性等性能进行对比研究。结果表明:皂氨型洁面对皮肤的保湿锁水能力优于纯皂型洁面,而控油能力优于纯氨基酸型洁面,且使用感方面皂氨型洁面整体上优于皂基型和氨基酸型洁面。此外,皂氨型洁面在人体皮肤上的残留少于纯氨基酸型,同时对皮肤的温和性优于纯皂基型。总体而言,皂氨型洁面产品实现了洗净力、温和性和使用感的良好平衡。

Development and Efficacy Verification of Blackhead Removal Products

Developed products according to the formation process and inducement of blackheads,and verified the efficacy of products.The results showed that:after using the product for 15 minutes,the blackhead decrease rate is 13.94%compare with the base value;after using the product for 7 days,the blackhead decrease rate is 25.43%compare with the base value;after using the product for 28 days,the blackhead decrease rate is 66.09%compare with the base value;after using the product for 15 minutes,the pores increase significantly compare with the control area;after 7 days of product use,there is no significant change in pore size compare with the base value;after 28 days of product use,there is no significant change in pore size compare with the base value;after 7 days of use,the oil decrease rate is 22.33%compare with the base value;after 28 days of use,the oil decrease rate is 29.05%compare with the base value;after 15 minutes of single use,93.94%of subjects are satisfy with blackhead removal;after continuous use of the test product for 28 days,96.67%of subjects are satisfy with blackhead removal,100%with oil control,and 96.67%with overall satisfaction of the product.