China wax comes from the secretions of the *Ericerus pela* scale insect. Manufacturers purify it into a high-melting-point wax. It works as a coating or binder, not as a supplement you swallow on its own.
This wax resists digestion until it reaches the lower gut. That property makes it useful for controlled release in topical and oral products. You see it in traditional Chinese medicine pills, where it delivers active ingredients instead of acting directly.
You will not find China wax sold as a standalone supplement. It coats tablets, capsules, or herbal pills. Swallow these with water, usually with meals, as the label instructs.
Caution: China wax is inert and indigestible. Large amounts can cause stomach blockage or pain. Do not eat it directly as a supplement.