Dehydrated Skin in Summer: Why Moisturizer May Not

Hello,
I’m Dr. Ki-bum Park,

Medical Director of GU CLINIC.

During the summer, many people say,

“My skin looks oily, but it still feels tight,” or

“Even after applying moisturizer, my skin becomes dry again very quickly.”

This condition is often described as dehydrated skin.

It may not be caused by a simple lack of moisture alone.

To put it simply, summer skin dehydration can become

more noticeable as skin temperature rises

and moisture evaporates more quickly.

Sweat and sebum may make the surface look shiny,

while the deeper layers struggle to retain hydration.

In this article, we will look at why dehydrated skin can worsen in summer

and why both skin temperature and moisture retention matter.

"Summer Skin Problems

Often Begin with Heat"

Strong UV exposure and high temperatures can raise

skin temperature more easily than usual.

The surface may appear dewy or glossy as sweat

and sebum production increase,

but a very different process may be taking place beneath the surface.

As skin temperature rises,

more water can be lost through the skin’s surface.

This may leave the skin looking oily

on the outside while feeling tight and dry underneath.

Moving repeatedly between hot outdoor weather

and air-conditioned indoor spaces also exposes

the skin to rapid temperature changes.

These shifts can disrupt overall skin comfort

and make it harder for the skin

to maintain a stable moisture balance.

"Is Adding More

Moisture Enough?"

Applying moisturizer and drinking enough

water are helpful parts of basic daily care.

However, if moisture continues to escape from the skin,

the feeling of hydration may not last very long.

In other words, replenishing water matters,

but so does creating an environment

in which that water is less likely to be lost.

Supporting the skin’s ability to hold on to moisture is

one of the key principles of managing dehydrated skin.

If dryness keeps returning,

it may be more useful to assess the current condition of the skin,

including the skin barrier and its moisture-retention environment,

rather than simply increasing the amount of moisturizer being applied.

"Changes That May Appear

as Skin Temperature Rises"

When skin temperature increases and hydration levels fall,

tightness is not the only possible concern.

Makeup may become patchy, the skin may feel rough,

and the complexion can appear dull or tired.

The skin may also become more sensitive,

with redness or discomfort appearing

in response to relatively minor triggers.

These changes are easy to dismiss as unavoidable summer problems,

but they may signal a shift in the skin’s internal moisture environment.

Summer skin care should therefore focus not only on reducing oil,

but also on cooling the skin appropriately

and supporting its ability to retain hydration.

"Considering SKINVIVE for Moisture Retention"

There are several ways to support the skin’s hydration environment,

and one option that may be considered is a skin booster.

Gangnam SKINVIVE is a hyaluronic acid-based injectable treatment

designed to help improve skin hydration and texture.

It may be considered for people whose skin becomes dry easily,

feels rough, or causes makeup to sit unevenly, particularly

when both hydration and skin texture are treatment goals.

The most appropriate injection plan, treatment area,

and number of sessions can vary depending on the individual,

so an in-person medical assessment should come first.

💡The Key to Managing

Dehydrated Skin

Is Moisture Retention

Skin that looks moisturized

on the surface is not necessarily

well hydrated underneath.

High skin temperature and repeated shifts between indoor

and outdoor temperatures can reduce hydration

more quickly than expected.

For summer skin dehydration, it is therefore important

to consider not only how much moisture is added,

but also how steadily the skin can retain it.

Daily habits such as sun protection, appropriate moisturizing,

adequate rest, and regular fluid intake should also be maintained.

If dehydrated skin keeps returning or you are concerned

about uneven makeup and rough texture, it may be helpful

to have your skin assessed and choose a management plan

suited to your individual condition.

This has been Dr. Ki-bum Park,

Medical Director of GU CLINIC.
Thank you for reading.