What tool should be used to remove creams from jars?

Using a spatula to remove creams from jars is the best choice, as it ensures cleanliness and prevents contamination of the product. A spatula typically has a flat, wide surface that allows for easy scooping and spreading of creams without introducing bacteria or other substances into the jar. This is particularly important in the context of cosmetology, where hygiene and sanitation are paramount in maintaining the integrity of products and the health of clients' skin.

Other tools like spoons, brushes, or cotton swabs might not provide the same level of control and are more likely to harbor bacteria or other contaminants if they are not properly sanitized. Spoons can be cumbersome and may not fit well into smaller jars. Brushes may be suited for application but are not ideal for transferring products directly. Cotton swabs can easily break or shed fibers, which could contaminate the cream. Hence, the spatula is the most appropriate and hygienic choice for this task.