Secondly, in this case, the manufacturer and the seller are jointly and severally liable. You can choose one party to claim liability for breach of contract and tort. There is a causal relationship between the unqualified goods provided by the other party and the damage to your body.
Finally, about punishment and compensation. First of all, we should analyze the fake and shoddy nature of essential oil and the inevitability of its harm to your skin. If the product only works for yourself, but has no effect on others, or a certain skin has been marked as unsuitable for use, then you will only get double the compensation amount, not scar compensation. As for his counterfeiting, it can only be investigated by industry and commerce. If it is the quality problem of essential oil, you can also ask for mental compensation in addition to the drug compensation and scar treatment expenses. The number of people is your decision, and the number of places is the judge's decision.