Extreme heat, sunlight and frequent contact with water accelerate Drying out of the skin. Experts explain why drinking water isn’t always enough and what’s the key to boosting skin moisture from within during the hottest months of the year.
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Summer puts the skin to the test. High temperatures, ultraviolet radiation and outdoor activities – whether in the sea or in the pool – create a constant loss of moisture, which has a direct impact on the environment its texture, elasticity and luminosity. Although hydration is usually automatically linked to water consumption, experts warn that this habit alone is not always enough to keep skin healthy.
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At this time of year the skin barrier tends to become weaker and lose some of its natural ability Retain fluids. As a result, characters like appear Tightness, roughness, opacity and more pronounced expression lines. “Effective hydration depends not only on how much water is drunk, but also on how the body manages to store and distribute it,” they explain from the field of aesthetic medicine.
When the skin can no longer store water
The skin’s ability to stay hydrated is influenced by several factors: collagen content, the presence of micronutrients, the absorption of healthy fats, the quality of rest and the general condition of the body. If any of these elements fail, the absorbed water will not be used properly at the skin level.
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“Dehydrated skin is easy to recognize: it looks dull, loses elasticity and can become more sensitive. In summer, these signs increase because the sun accelerates the breakdown of collagen, a key protein for maintaining the structure and hydration of the skin,” explains Dianara Tomé, specialist in aesthetic medicine and facial rejuvenation.
Given this scenario, experts agree that hydration must be approached comprehensively, combining daily habits that work from within with sustainable external care.
Top five habits to improve hydration
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Ensure adequate water intake: Continuous hydration throughout the day can help replenish the loss caused by heat and sweat. It’s not just about quantity, but also about regularity.
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Provide Collagen and Vitamin C: These nutrients play a fundamental role in the skin’s firmness and elasticity, and also promote the natural production of collagen, essential for moisture retention.
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Incorporate healthy fats into your diet: Foods like avocado, olive oil and nuts strengthen the skin barrier and reduce transepidermal water loss.
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Prioritize night sleep: Good sleep stimulates the processes of cell regeneration and tissue repair, which are the key to more balanced and resilient skin.
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Keep the body moving: Physical activity improves blood circulation, which promotes oxygenation of the skin and the proper distribution of water and nutrients.

Topical care is also important
Added to these habits is the importance of a daily external care routine. Gentle cleansing, the use of moisturizing products with ingredients such as hyaluronic acid or glycerin, and the incorporation of antioxidants help boost hydration and protection oxidative stress of the skin.
Sun protection, experts warn, is essential even on cloudy days. Sun exposure not only dehydrates but also destroys collagen fibers, impairing the skin’s ability to remain firm and hydrated over the long term.
Collagen and stimulation treatments
The availability of collagen can be strengthened through a balanced, rich diet Proteins, vitamin C and minerals such as zinc. In some cases, medical treatments are also used to stimulate natural production.
“Biostimulators help the skin restore its ability to form collagen and maintain deeper and longer-lasting hydration from within,” explained Tomé. When, according to the expert Collagen loss is more advanced, this type of treatment offers more visible and lasting results than topical or oral alternatives.
These practices used in the field of aesthetic medicine – with developments promoted by specialized laboratories such as Rennova – aim to improve the texture, firmness and quality of the skin without altering its naturalness.
LV/EM