1. Skin irritation: lauryl alcohol causes skin irritation or allergic reactions in some people. This leads to uncomfortable symptoms such as itching, redness, pain or rashes on the scalp. If you are sensitive or allergic to lauryl alcohol, it is recommended that you choose shampoo products that do not contain lauryl alcohol.

2, dry scalp: lauryl alcohol has the effect of removing oil and natural protective layer on the scalp, long-term use of excessive lead to dry scalp and flaking. This can make the scalp feel tight, itchy or have dandruff problems.

3, hair damage: lauryl alcohol's strong cleansing power will deprive hair of its natural oils and moisture, resulting in hair becoming dry, rough and easy to break. Long-term use of shampoo products containing high concentrations of lauryl alcohol will have a negative impact on hair quality.