These days, when summer weather begins, there is a story we often hear.
“It was clearly fine in the morning, but by lunchtime everything around my nose starts to cake.”
“My skin gets oily, but it also feels tight.”
“I’ve tried all the good primers and cushions, but my makeup falls apart by the afternoon.”
In environments with a lot of movement and large indoor-outdoor temperature differences, concerns about makeup breakdown and shine can come up more often.
The base makeup that applied well when you left for work may start to lift around the nose after lunch, pores may look larger, and the chin or forehead may begin to shine. If blackheads also stand out more every time you look in the mirror, you may find yourself wondering, “Why is my skin suddenly like this?”
I’ll talk about why pore care and sebum care concerns repeat more often as the weather gets warmer, and how care may differ depending on skin condition.

Why skin suddenly changes in early summer
Human skin is quite strongly influenced by weather and the environment.
In early summer, as temperature and humidity both rise, the environment becomes one where sebum production tends to increase.
Simply put, this can be seen as a period when oil is released more quickly on the skin’s surface.
The issue is that it’s not just sebum that increases.
If air-conditioning, strong UV rays, and repeated indoor-outdoor temperature changes continue,
moisture inside the skin can be lost more easily.
So in practice, the inside of the skin may be dry while the surface becomes oily.
In such cases, makeup may not adhere well and can cake around the nose or mouth, causing base makeup to break down easily.
Around the pores, sebum and dead skin cells can build up together, making the skin texture look rougher as the afternoon goes on.

It’s not always just “because you have oily skin”
Even if you’re worried about makeup breakdown, it’s not right to assume everyone simply has oily skin.
“I have a lot of oil, but my skin feels very tight after washing.”
“Oil comes up, but my makeup keeps lifting.”
In such cases, it may also be worth considering the possibility that the oil-moisture balance is out of sync.
This is because the drier the skin feels, the more it may try to produce sebum in response.
So some people try to remove oil too aggressively with strong cleansing or frequent scrubbing, which can instead irritate the skin barrier.
Frequently squeezing blackheads by hand or repeatedly using nose strips may seem to make the skin look cleaner for a moment, but it can also lead to irritation or make pores look more noticeable.
Some people say, “I’ve tried every good product, but it keeps happening,” and
when the skin condition itself is unstable, changing products alone may not solve the problem.
Why inner dryness and makeup breakdown happen together
If you look closely at skin where makeup breaks down, it’s often not just a matter of oil.
It may seem fine in the morning, but by afternoon caking around the nose becomes more severe,
the skin texture looks cracked when you smile, blackheads look darker, and pores stand out more clearly.
In such cases, dead-skin management on the surface, moisture retention, and sebum balance may all be affecting the skin at once.
When the skin lacks moisture, makeup often can’t adhere smoothly to the surface and repeatedly looks lifted or cracked.
Also, the rougher the skin texture becomes, the more noticeable it is when foundation gets caught between pores.
So rather than simply reducing oil, it may be important to take a comprehensive look at the skin’s current condition.

Care directions can vary depending on skin condition
Not all skin types are treated the same way when it comes to pore care or sebum care.
For some people, controlling excess sebum may come first, while for others, restoring the skin barrier or improving moisture may be needed first.
If blackheads keep recurring, a direction that reduces skin irritation while also caring for skin texture may be considered.
Reducing excessive cleansing
Adjusting irritating extraction habits
Skincare that considers the oil-moisture balance
Skin texture care
Checking the right pore-care direction for your skin condition
These may also help together.
Depending on the skin condition, various care methods or procedural approaches may be considered, but what matters is the process of looking at the current skin condition and lifestyle together.
Even if it looks the same as “shine,” the causes are not always identical.
Repeated makeup breakdown and shine may be a sign of changes in skin balance.
There are cases where makeup breakdown, blackheads, and more visible pores repeat along with increased sebum.
Depending on each person’s skin type, the amount of sebum production or degree of moisture loss can vary.
Rather than simply removing oil, managing the oil-moisture balance according to your current skin condition may help maintain skin comfort.