Write a question about the following article.

Usually that subsides within a week or two . I would stick with a product for at least 30 days and be sure you 're using it as the manufacturer directs . Some products may take even longer to see results , such as products for scar treatment .

Question:
What might the person be referring to ?
pick from the following.
* Medical equipment.
* Skincare products.
* Exercise equipment.
* Health juices.