The skin is red and painful, but it is slightly burned. Merchants and manufacturers have certain responsibilities, unless the manual has indicated that it may burn the skin, so use it with caution.

If you are in doubt about the ingredients on the package, you can ask the manufacturer for the inspection certificate submitted by the batch of products to the government inspection agency through the seller. If you still have questions, you can check the authenticity of the certificate online or by phone, or you can submit it yourself. If the inspection results are inconsistent with those provided by the manufacturer, you can claim compensation from the seller twice or directly from the manufacturer.