These products are sold in many different forms and in different regions. For the most part, they are sold by their ingredients, so you will have to do a little investigation before buying. Some of the common questions I receive are about ingredients. Most companies don't use chemicals, but rather just add ingredients to make the product work. So what is the difference between a synthetic and natural ingredients, and what are the common names of the most common ingredients? Synthetic (in addition to using chemicals) Synthetic ingredients are derived from substances that have already been used in medical research. For example, a chemical such as acetylsalicylic acid is commonly used to treat acne and other skin problems. Natural (in addition to using natural ingredients) Natural ingredients come from plants and herbs, not from nature. They are the best option for your skin. The beauty of natural ingredients is that they have no adverse effects on the skin. They are usually less expensive than synthetic ingredients and contain less chemicals. Most natural ingredients can be found in the natural section of the store. These are the most popular natural products you can buy online. Some are organic or natural but most of them don't contain any preservatives, which may be harmful for your skin.