1. Water
The body contains 9% water, and water plays a vital role in keeping the skin soft and flushing out toxins created by biochemical reactions in the body. When dehydrated, the body uses stored fluids, leading to dry skin. Proper hydration keeps the skin clear, breathable, and helps prevent acne. Hydration levels depend on the body's overall water balance. Dehydration worsens dry skin by reducing moisture levels. Older adults often suffer from dehydration due to a diminished thirst response with age. Dehydrated skin shows various symptoms, from dryness and flaking to cracking, redness, inflammation, tightness, and itching. The severity and location of dryness may vary. When the stratum corneum's water content drops below 8-10% of its normal 15%, the skin becomes rough, dull, and less resistant to damage. Dry skin leads to increased epidermal production and heightened inflammatory responses. However, excessive moisture or prolonged water exposure can result in irritant contact dermatitis. Water loss from the skin varies by skin type: white skin loses the most, followed by yellow, and lastly, black skin. Different body areas lose water at different rates, with the palms, feet, forehead, arms, thighs, chest, stomach, and back in descending order.
Nothing can replace water’s role in detoxifying the body. Drinking enough water daily helps keep your skin hydrated, preventing excess oil production (since oil secretion is driven by dehydration), resulting in a brighter, smoother, and healthier complexion. The optimal intake is about 2 to 2.5 liters of water per day, along with vitamin C-rich fruit juices like orange, strawberry, and watermelon. Dehydrated skin becomes rough and dry, making it prone to wrinkles. The body’s water levels also impact oil secretion, and staying hydrated helps regulate oil production. Water is essential for maintaining organ and body function. When dehydrated, dry, darker patches appear on the skin, and the sebaceous glands start overproducing oil and sebum to compensate for the lack of hydration, leading to oily skin and acne. To combat excess oil, ensure you stay well-hydrated!


2. Foods Rich in Omega-3 and Fatty Acids
Omega-3 is an essential fatty acid that our body cannot synthesize on its own. Therefore, the only way to get omega-3 is through food sources that are rich in this nutrient. Health experts recommend including these foods in your daily diet to ensure adequate intake. Omega-3 has many benefits for the skin, and it's often shared among women for its anti-aging, acne-fighting, skin-brightening, and oil-reducing properties. The EPA in fish oil helps regulate sebum production and enhances skin hydration without excessive oil secretion. This results in softer skin with improved elasticity. Research shows that EPA not only works as an antioxidant but also as an effective anti-inflammatory agent, which helps protect and rejuvenate the skin from environmental damage, especially from sunlight.
Since the body doesn't produce omega-3, it must be obtained from dietary sources. Omega-3 fatty acids, which are unsaturated fats, play a crucial role in brain function, reducing inflammation, and lowering the risk of heart disease and other cardiovascular issues. A deficiency in omega-3 can lead to symptoms such as dry skin, memory loss, and fatigue. Omega-3 deficiency is not uncommon, and the benefits of omega-3 for our health are vast and remarkable. If you have oily skin, make sure to include foods rich in omega-3 and fatty acids to reduce inflammation and control excess oil. Some of the best omega-3-rich foods include tuna, avocados, soybeans, and flaxseed oil.


3. Cucumbers
Cucumbers are a popular food in many Vietnamese meals and are also a favorite beauty ingredient for many women. With outstanding benefits like high water content, antioxidants, vitamins, easy to prepare, and an affordable price, cucumbers have earned their place as a beauty powerhouse.
Made up of 95% water, cucumbers are the perfect choice for oily skin as the water content helps hydrate skin cells, aiding in the detoxification process while ensuring the skin stays properly moisturized. Combining cucumber with honey creates an excellent moisturizing face mask, making it a go-to solution for preventing dry skin in the winter months. Moreover, cucumbers provide numerous antioxidants and hydration, making them a miracle ingredient for rejuvenating oily skin. There’s no reason to skip out on this wonderful fruit. For maximum benefits, incorporate one cucumber into your daily routine.


4. Grapefruit
In addition to being rich in fiber and water, grapefruit is packed with natural vitamin C, making it an excellent detoxifier for your oily skin. You can drink fresh grapefruit juice daily or enjoy it as a fruit dessert after meals to protect and rejuvenate your oily skin. Moreover, grapefruit juice has been proven to be beneficial for the body and can help prevent aging, gradually brightening your complexion. So, drinking grapefruit juice daily is a simple yet effective way to enhance your skin's natural glow.
Grapefruit nourishes your skin from the inside out by targeting melanin, leading to a brighter and more radiant complexion. The vitamin C in grapefruit peel helps stimulate collagen production, maintaining skin elasticity, preventing wrinkles, and promoting a firmer skin surface. A simple skincare routine involves placing a small amount of grapefruit peel in hot water, covering your head with a towel, and inhaling the steam to nourish your skin. Additionally, a homemade mask made with two grapefruit segments, four tablespoons of oatmeal, and a few drops of lemon juice can be applied for 15–20 minutes to cleanse your skin, remove excess oil, and tighten pores. This mask can be used twice a week to keep your skin clean, free from excess oil, and with minimized pores. Grapefruit, whether the pulp or the peel, is packed with vitamin C and nutrients that contribute to healthier and more youthful skin.


5. Mint
Fresh mint is a vital ingredient in many dishes. Its refreshing flavor is also essential in products like chewing gum, candies, tea, and as a seasoning in cooking. Mint leaves, rich in nutrients and with powerful antibacterial properties, not only help combat acne, but also tighten pores, balance skin moisture, and fade dark spots effectively. If you're struggling with issues like acne, enlarged pores, oily skin, dark spots, or simply want to exfoliate, don't overlook mint leaves! They offer skincare benefits comparable to expensive cosmetics and are very safe for your skin.
You can turn mint leaves into a refreshing toner for daily use to cleanse impurities, excess oil, and bacteria trapped beneath the skin. At the same time, it balances your skin's moisture levels, leaving it fresh without making it dry or oily. To make this, simply boil a handful of mint leaves in 500 ml of water (until half the water evaporates), strain out the leaves, and store the cooled liquid in the refrigerator for use as a toner. Mint's cooling properties help regulate your body’s hormones, thus reducing oil production – the main culprit behind oily skin, gradually improving your complexion. With mint, you can easily make mint tea, mint smoothies, or even mint ice cream for a daily refreshing treat.


6. Oats
Oats are incredibly rich in zinc, a vital nutrient for controlling oil production on the skin, promoting collagen regeneration, and slowing down the aging process. They help reduce excess oil and give your skin a youthful, revitalized appearance. Enjoy a daily bowl of oat porridge or use oatmeal as a face mask twice a week to see noticeable improvements in your oily skin. In unpredictable weather, sensitive skin can feel uncomfortable, but this issue can be easily tackled with the simple application of oatmeal. Just mix half a cup of oatmeal with warm water, wait until the oats expand and become thick, then apply the mixture to your face and gently massage in circular motions. After finishing the massage, rinse your face with warm water and gently pat your skin dry.
Additionally, lactic acid found in milk or yogurt, when combined with oatmeal, creates a binding agent that effectively removes dead skin cells. This easy-to-make exfoliating mask involves mixing a tablespoon of oatmeal with milk or yogurt, waiting for the mixture to thicken, then applying it to your face. Leave it on for 20 minutes before rinsing with warm water. Not only does this exfoliate dead skin, but the nutrients in oatmeal also calm the skin and fight inflammation. Overall, this beauty remedy helps eliminate excess oil and dirt, leaving your skin clean and refreshed. It’s especially effective in reducing skin irritation caused by environmental factors. You can use this treatment every morning for glowing, healthy skin.


7. Low-Sugar Foods
Excess sugar consumption accelerates the signs of aging on your skin. When sugar enters the bloodstream, it is converted into proteins, which contribute to the loss of elasticity in aging tissues, including the skin, muscles, and arteries. Additionally, sugar damages collagen, leading to the skin turning brown, the appearance of age spots, and loss of elasticity. Over time, this can result in wrinkles, sagging skin, and dark circles under the eyes. The more sugar circulating in your blood, the faster the aging process is pushed forward. High blood sugar increases inflammation in the body's veins, causing skin inflammation, rashes, and itching. These infections can break down capillaries, decrease skin elasticity, and damage skin cells.
Keep in mind that accelerated skin aging is the result of all these effects. With such damaging impacts on the skin, it’s essential to be mindful of your sugar intake. Additionally, sodas, candies, cakes, and other sugary foods all contain sugar, so it’s crucial to regulate these to protect both your skin and overall health. Sweet treats like cookies, sugary candies, and high-sugar foods are the worst enemies of oily skin, as they worsen excess oil production, clog pores, and cause breakouts. To maintain healthy skin, avoid sugary foods and opt for lower-sugar alternatives.


8. Dark Leafy Greens
Oily skin types should regularly consume more leafy greens to provide essential vitamins like vitamin C and minerals. This helps control sebum production and promotes a healthier complexion. The antioxidants in leafy greens also help to reduce skin aging. These vegetables act as a vital source of nourishment for oily skin, preventing the overproduction of oil, especially on hot and humid days. Rich in vitamin C, leafy greens can slow the aging process and act as a natural defense against bacteria that cause inflammation, clogged pores, and excess oil production.
In a typical diet, we often consume animal-based foods like fish, meat, eggs, and organ meats, which contain sulfur and phosphorus. This can create an acidic environment in the body, affecting overall health. In contrast, leafy greens are rich in trace elements like potassium, sodium, calcium, and magnesium, which help balance acidity and alkalinity in the body. Consuming more greens like spinach and kale helps maintain a healthy pH balance, benefiting both your skin and health. Spinach, for example, can be transformed into a refreshing, nutrient-packed smoothie for a healthy start to your day.


9. Fiber-Rich Foods
Fiber is a nutrient that provides numerous health benefits. It not only aids digestion and prevents constipation, but certain types of fiber also help with weight loss, lower blood sugar levels, and significantly reduce sebum production on the skin’s surface. Additionally, many studies have shown that fiber helps lower the risk of heart disease and stroke. Fiber is a key nutrient that helps the body detoxify, enhances nutrient absorption, promotes healthy skin, cleanses pores, and slows down the aging process.
Excellent sources of fiber include fruits like oranges, tangerines, black grapes, and grapefruit. These are particularly beneficial for those dealing with seborrheic dermatitis, as the high vitamin C content in these fruits can help eliminate excess oil on the skin. Furthermore, the citric acid in oranges helps reduce acne and address various skin concerns. Starches like whole wheat bread, corn, and barley are also essential foods for oily skin types. Bananas, rich in vitamin E, potassium, and phosphorus, can help tighten pores and prevent bacterial infections, thus improving skin conditions like seborrheic dermatitis. Incorporating fiber-rich fruits and antioxidant-packed foods can enhance metabolism, slow disease progression, and accelerate skin recovery.


10. Various Nuts
One common issue faced by those with oily skin is acne. The persistent acne scars that linger can be frustrating. This is where vitamin E-rich nuts like almonds, walnuts, and cashews come to the rescue. Additionally, watermelon seed oil is excellent for regulating oil production in oily skin, moisturizing, and nourishing dry, sensitive, or prematurely aging skin. Thanks to its neutral properties, lightweight texture, and ability to absorb easily into the skin while maintaining moisture, watermelon seed oil is a natural product suitable even for baby skin. Unlike mineral oil – a common ingredient in commercial baby oils – watermelon seed oil does not clog pores and helps the body naturally detoxify through the skin.
Grape seeds, which are typically discarded during winemaking, have now been processed into essential oils with remarkable beauty benefits. Pure grape seed oil, in its liquid form, is either green or yellow and has a slightly earthy scent. One of its most notable uses is as a moisturizer. Thanks to its light texture, easy absorption, and non-greasy feel, it is an ideal ingredient for natural skincare products. Applying pure grape seed oil directly to your skin can hydrate and soften it. The natural vitamin E in these seeds helps fade acne scars, brighten oily skin, and regulate oil production. These nuts and their oils are especially beloved by those with oily skin.


