Increasing subcutaneous fat, the layer just beneath your skin, requires a sustained calorie surplus combined with habits that encourage your body to store fat in this layer rather than around your organs. Unlike visceral fat (the deep belly fat linked to metabolic disease), subcutaneous fat plays a protective role. It cushions your body, insulates against temperature changes, and may even buffer against some metabolic risks associated with obesity. People looking to increase it are often dealing with age-related fat loss, a naturally lean frame, or facial volume loss that creates a gaunt appearance.
Why Subcutaneous Fat Is Worth Preserving
Not all body fat carries the same health risks. A study published in Diabetes Care found that among people with high levels of visceral (organ-surrounding) fat, those who also had more subcutaneous fat actually showed lower rates of high triglycerides. Men with the most subcutaneous fat in this group had high triglycerides 52.7% of the time, compared to 64.4% for those with the least subcutaneous fat. HDL cholesterol and fasting glucose levels also held steadier as subcutaneous fat increased, even though overall BMI was significantly higher.
The explanation lies in what researchers call the ectopic fat hypothesis. When your body runs out of room to store fat in healthy subcutaneous tissue, it starts depositing fat in the liver, muscles, and pancreas, where it causes metabolic damage. Subcutaneous fat represents proper, non-pathogenic fat cell expansion. In other words, it’s the body’s preferred, less harmful storage site.
What Determines Where Fat Goes
Where your body deposits fat depends on sex, genetics, age, hormone levels, and inflammation. Women tend to store more subcutaneous fat in the hips and thighs, while men store proportionally more visceral fat. This pattern is largely driven by sex hormones. In subcutaneous tissue, enzymes that convert weak estrogens into the most potent form are roughly twice as active as in visceral tissue. This local estrogen activity helps direct fat storage toward the subcutaneous layer, which partly explains why women lose subcutaneous fat and gain visceral fat after menopause when estrogen levels drop.
Cortisol, the body’s primary stress hormone, pushes fat storage toward visceral depots. Chronic stress or conditions that raise cortisol levels tend to shift fat away from the subcutaneous layer and toward the abdomen. Insulin sensitivity also plays a role: subcutaneous fat cells that remain responsive to insulin continue to absorb and store fatty acids efficiently, while insulin resistance favors visceral storage.
How Aging Depletes Subcutaneous Fat
As you age, the subcutaneous layer thins, particularly in the face, hands, and limbs. This happens for two connected reasons. First, the precursor cells that develop into new fat cells replicate and mature more slowly in older adults. Second, aging fat tissue produces more inflammatory signals, particularly a protein called TNF-alpha, which directly suppresses the development of new fat cells. The result is a shrinking pool of healthy subcutaneous fat cells that the body can’t easily replenish.
This is why age-related facial hollowing, thinning skin on the hands, and loss of padding on the soles of the feet are so common. The fat isn’t just shifting elsewhere; the tissue’s ability to regenerate is genuinely declining.
Eating for Subcutaneous Fat Gain
You need a calorie surplus to gain any type of fat. Gaining subcutaneous fat specifically means creating that surplus while minimizing factors that drive visceral storage. A moderate surplus of 300 to 500 calories per day is a reasonable starting point, enough to gain weight gradually without overwhelming your metabolism.
Focus on foods rich in healthy fats. Seeds, nuts, fatty fish like salmon and herring, avocados, and olive oil provide calorie-dense nutrition without the inflammatory effects of processed foods. Omega-3 fatty acids from fish and fish oil have been shown to reduce inflammatory compounds in subcutaneous fat tissue and lower the expression of immune-related genes that contribute to tissue dysfunction. This anti-inflammatory effect helps keep the subcutaneous layer healthier as it expands.
Whole milk, nut butters, and moderate portions of complex carbohydrates round out a weight-gain diet. Avoid relying on refined sugars and ultra-processed foods for your surplus. These tend to spike insulin repeatedly, promote inflammation, and encourage visceral rather than subcutaneous fat storage.
Exercise That Supports Healthy Fat Distribution
Exercise creates a paradox here: it burns calories, which works against a surplus, but it also profoundly affects where and how your body stores fat. Both aerobic exercise and resistance training cause subcutaneous fat cells to undergo “browning,” a process where white fat cells take on characteristics of metabolically active brown fat. These browned cells are smaller, better supplied with blood vessels, and burn more energy. While this might sound counterproductive for someone trying to increase subcutaneous fat, the shift actually improves the health and function of the subcutaneous layer.
Resistance training is particularly useful because it builds muscle underneath the subcutaneous layer, which can improve the appearance of fullness even without dramatic fat gain. It also improves insulin sensitivity, which helps direct new fat storage toward subcutaneous rather than visceral depots. If your goal is gaining subcutaneous fat, pair strength training with a calorie surplus large enough to offset the calories burned during exercise.
Reducing Stress and Protecting Hormones
Chronically elevated cortisol is one of the strongest drivers of visceral fat accumulation at the expense of subcutaneous stores. Sleep deprivation, psychological stress, and overtraining all raise cortisol. Prioritizing seven to nine hours of sleep, managing stress through proven methods like regular physical activity or mindfulness, and avoiding extreme calorie restriction all help keep cortisol in check.
For postmenopausal women, the hormonal shift away from estrogen naturally redirects fat storage toward visceral depots. Hormone replacement therapy can partially reverse this pattern, though that decision involves weighing multiple health considerations with a physician.
Gaining Facial Fullness
You can’t target fat gain to a specific body part through diet alone. Gaining weight overall will eventually add some volume to the face, but the distribution depends on your genetics and hormones. That said, a few approaches can help improve facial fullness specifically.
Facial exercises have some supporting evidence. A 2018 study found that women aged 40 to 65 who performed 32 different facial exercises over 20 weeks reported visibly fuller upper and lower cheeks. The routine involved sustained muscle contractions designed to build volume in the muscles beneath the facial fat layer.
Topical approaches like applying oils (olive, coconut, avocado, or almond oil) or using masks with hyaluronic acid and glycerin can temporarily plump the skin’s appearance by drawing moisture into the outer skin layers. These don’t increase actual fat volume, but they can reduce the hollow look that comes with subcutaneous fat loss. Honey applied as a mask works similarly as a humectant, pulling moisture into the skin.
Fat Transfer Surgery
For localized subcutaneous fat loss that diet and exercise can’t address, fat transfer is a surgical option. A plastic surgeon removes fat from an area where you have excess, such as the abdomen or thighs, and injects it into areas that need volume: cheeks, under-eye hollows, hands, breasts, or buttocks. The procedure creates natural-looking results because it uses your own tissue.
Recovery takes several weeks depending on the treatment area, with swelling being the most common side effect. The main limitation is that a significant portion of transferred fat cells don’t survive in their new location, so surgeons typically over-correct initially. Multiple sessions are sometimes needed to achieve the desired result.
Putting It Together
The practical formula for increasing subcutaneous fat combines a moderate, sustained calorie surplus from anti-inflammatory whole foods with regular resistance training, adequate sleep, and stress management. You’re essentially creating the conditions for weight gain while steering your body’s fat storage away from visceral depots. For localized concerns like facial hollowing, targeted exercises and cosmetic procedures offer additional options. The process is gradual, because subcutaneous fat cells expand and multiply slowly, but the metabolic benefits of building this layer rather than visceral fat make the patience worthwhile.