Subdermal fillers, also known as dermal fillers or soft tissue fillers, are substances injected beneath the skin to enhance facial features, restore volume, and reduce the appearance of wrinkles or fine lines. These fillers are commonly used in cosmetic procedures to achieve a more youthful and rejuvenated appearance.

Various types of materials are used as subdermal fillers, including hyaluronic acid, collagen, and synthetic materials. Each type has its unique properties and is suitable for different purposes. Here are some key points about subdermal fillers:

1. Hyaluronic Acid Fillers: This is one of the most popular types of fillers. Hyaluronic acid is a naturally occurring substance in the skin that helps retain moisture and add volume. Common brand names include Juvederm and Restylane.
2. Collagen Fillers: Collagen, a protein found in the skin, can be used as a filler. However, the use of collagen fillers has decreased over the years due to the availability of other options.
3. Synthetic Fillers: Some fillers are made from synthetic materials like poly-L-lactic acid or calcium hydroxylapatite. These substances stimulate collagen production and provide long-lasting results.
4. Procedure: Subdermal filler injections are typically performed in a medical office or clinic. The procedure is minimally invasive and often requires little to no downtime. The injection sites are usually numbed with a local anesthetic to minimize discomfort.
5. Results: The results of subdermal filler treatments are usually immediate, and patients can see an improvement in volume and reduction of wrinkles. However, the duration of results varies depending on the type of filler used.
6. Side Effects: While subdermal fillers are generally considered safe, there can be some side effects, including temporary swelling, redness, bruising, or tenderness at the injection site. Serious complications are rare but can include infection or allergic reactions.