Understanding the Origins of Dimples
Dimples are technically a minor anatomical variation, most commonly caused by a split or bifurcation in the zygomaticus major muscle. This muscle is responsible for lifting the corners of your mouth when you smile. In those with dimples, the muscle inserts into the skin differently, creating an indentation when it contracts. However, the story of how they change over time is much more nuanced.
The Role of Facial Fat
For many, the most significant factor influencing dimple depth is the amount of subcutaneous fat in the cheeks. Babies often have prominent dimples due to their "baby fat," which can recede as they grow older, causing the dimples to become less pronounced or disappear entirely. Conversely, a person who gains weight later in life may find their dimples appear shallower, as the added fat fills in the indentation.
Changes in Muscle and Skin
As we age, our bodies undergo several changes that affect facial features. The zygomaticus major muscle itself can stretch and lengthen over time, which can alter the appearance of dimples. The loss of collagen and elastin, the proteins that provide skin with its firmness and elasticity, is another key factor. As skin laxity increases, particularly after the age of 30, the underlying structure that creates the dimple may become less defined, causing the dimple to soften.
The Genetic Factor
While genetics play a role in whether you have dimples in the first place, their long-term behavior can be unpredictable. While dimples are often considered a dominant genetic trait, scientific research in this area is limited, and other genes may also be involved. This can explain why some people have lifelong, permanent dimples, while for others they are only a temporary feature.
Aging Effects on Facial Features: Dimples vs. Wrinkles
It's important to distinguish between how aging affects dimples and how it causes wrinkles. Dimples are indentations caused by muscle and connective tissue, while wrinkles are lines caused by a combination of muscle activity, loss of elasticity, and volume changes.
| Feature | Primary Cause | Effect of Aging | Appearance over time |
|---|---|---|---|
| Dimples | Bifurcated zygomaticus major muscle; subcutaneous fat | Loss of fat and skin elasticity | Can become shallower, deeper, or less noticeable |
| Wrinkles | Loss of collagen and elastin; repetitive muscle movements | Reduced skin firmness and volume | Typically become more prominent and defined |
The Remodeling of the Face
Experts have observed that the face undergoes significant remodeling with age. This includes the repositioning of facial fat pads and changes to the bone structure beneath the skin. According to some oral and maxillofacial surgeons, this remodeling of facial fat over time can make dimples appear more or less apparent as the face ages.
Why Some Dimples Seem to Deepen
While some dimples fade, others may appear to deepen. This can happen for a few reasons. As the face loses overall volume with age, the depression created by the dimpled muscle might become more conspicuous. The surrounding skin may sag slightly, which can accentuate the existing indentation. Additionally, a decrease in the skin's natural underlying padding can make the muscle's attachment point more visible.
Maintaining Your Facial Features
For those who wish to maintain or enhance their facial features, there are various approaches. A good skincare routine is crucial for preserving skin elasticity. This includes using sunscreen daily to prevent sun damage, staying hydrated, and eating a balanced diet rich in vitamins and antioxidants. Advanced options, such as dermal fillers or micro-needling, can be discussed with a dermatologist to address volume loss and stimulate collagen production.
The Takeaway
In conclusion, whether dimples get deeper or fade away with age depends on a unique combination of genetics, body composition, and the inevitable effects of the aging process. The transient nature of some dimples is a testament to how our faces evolve throughout our lives, telling a story of change and growth. Learn more about the science of dimples from MedlinePlus here.
