This is a great question and there is much misinformation about chemical peels. Chemical peels, whether botanical, natural, or chemical are categorized as: "superficial", "medium-depth", or "deep". There are entire volumes of textbooks written on this subject, but our space is limited here. To summarize...A superficial chemical peel is defined as a peel that affects the epidermal layer only. A medium-depth chemical peel affects the epidermis and the upper dermis, and a deep chemical peel affects all of the epidermis and a large part of the dermis. Superficial and medium depth peels can cause a temporary tightening of the skin. This tightening is due to the body's response to the agent that was applied, for example an alpha-hydroxy acid, a beta-hydroxy acid, or an enzyme peel will cause an inflammatory reaction by the body, with swelling in the skin and a temporary tight feeling, followed by dehydration of the tissue, with a continued tight appearance. Depending on the potency of the agent applied, the tight appearance continues for 1 to 7 days. After the body's response has ended, the skin will re-hydrate and return to normal. Deep chemical peels (usually involving phenol or high levels of TCA paired with other compounds) are the only peels that can cause permanent tightening, and the tightening is due to permanent alteration of the collagen in your skin, including possible permanent damage.
Chemical peeling is often thought of as a minor procedure, but as you can see by my comments, it can cause damage or it can be a wonderful thing..it just depends who is treating you and how much they know. For this reason, please see a board certified dermatologist or board certified facial plastic surgeon for a peel. Get fully educated on the types of peels available, especially those that are best for you.