Shower gel is a liquid cleaner for bathing. According to different ingredients, it can be divided into alkaline shower gel and acidic shower gel. Preparation: two mineral water bottles, half a bottle of water, and two different brands of shower gel. Put two drops of different brands of shower gel in two mineral water bottles with half a bottle of water, cover them and shake them hard to see the degree of foam. Generally, there are many foams, and the foams are smoother. Preparation: two mineral water bottles, half a bottle of water, and two different brands of shower gel. Preparation: two mineral water bottles, half a bottle of water, and two different brands of shower gel. According to the research of Environmental Health Science Association, the use of shampoo, soap and shower gel containing lavender oil and tea tree oil will lead to hormonal imbalance and abnormal chest enlargement in little boys. There are three boys in America, aged 4, 7 and 10, who suffer from breast dysplasia. In this regard, Yan, deputy director of the Beauty Expert Committee of the Beauty and Cosmetics Industry Chamber of Commerce of the All-China Federation of Industry and Commerce, said that the composition of essential oil is complex, and it is indeed possible to increase human estrogen during use, leading to male hormone disorder and abnormal chest enlargement. However, toiletries containing lavender and tea tree oil belong to chemical synthetic detergents. In addition to surfactants, there are builders such as phosphate, sodium carbonate, essence and enzyme, as well as foam promoters, thickeners and integrators. With so many chemical components mixed together, it's hard to say which one is the cause. Moreover, this kind of toiletries may not really contain the ingredients in lavender and tea tree, but may just be the spices in the essence.

Note: Generally, one method cannot directly show the quality of a shower gel, but a variety of methods can be used together to find a cheap shower gel. I use it to wash my hair and bathe in the school bathhouse. I actually made the lowest mistake in history: I didn't bring shampoo. In desperation, I took out my shower gel and solemnly recommended it.