If your complexion has been looking tired, lackluster, or lacking its usual glow, your skincare routine may not be the only thing to blame. According to dermatologist Dr. Lim Ing Kien “Ingky,” dull skin is often caused by everyday habits that are easy to overlook—and addressing them can help restore a healthier-looking complexion.
From dehydration to diet, here are three hidden reasons your skin may look dull and what you can do about them.
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1. Your Skin Is Dehydrated
One of the most common causes of dull-looking skin is dehydration. When skin lacks moisture, it can appear rough, flat, and less radiant.
"Your skin is dehydrated," Dr. Ingky explains. To help restore hydration, he recommends drinking at least 2 liters of water each day while also using a hydrating moisturizer to lock in moisture and support the skin barrier.
Keeping your skin hydrated from both the inside and outside can help improve its overall texture and give it a healthier glow.
2. Dead Skin Cells Have Built Up
Another hidden culprit behind dull skin is a buildup of dead skin cells. "When you have excessive dead skin cells, your skin looks dull," Dr. Ingky says.
Instead of relying on harsh physical scrubs, he recommends using a chemical exfoliant once or twice a week. Ingredients such as salicylic acid and glycolic acid can help dissolve dead skin cells, revealing fresher, brighter skin underneath.
It's important not to over-exfoliate, however, as doing so can damage the skin barrier and lead to irritation.
3. Your Diet Is High in Processed Foods and Sugar
Healthy skin starts from within, and Dr. Ingky says your diet can have a noticeable impact on your complexion. If you're regularly eating processed foods and sugary snacks while skimping on nutrient-rich meals, your skin may reflect those habits.
"You are consuming a diet high in processed food and sugar and low in nutrients," he explains. Instead, he recommends focusing on a balanced diet rich in fruits, vegetables, healthy fats, and lean proteins. Foods packed with antioxidants may also help protect skin from oxidative stress, which can contribute to a dull appearance.
The Bottom Line
Glowing skin isn't just about expensive serums or trendy treatments. Staying hydrated, gently exfoliating, and nourishing your body with a balanced diet can all play an important role in maintaining a brighter, healthier complexion.
If your skin remains persistently dull despite making lifestyle and skincare changes, consider checking in with a board-certified dermatologist to rule out underlying skin conditions or nutritional deficiencies.
