Why Does My Skin Get Oily in the North? Regional Effects on Acne

As soon as I returned to the northern region, my T-zone became excessively oily?

I am from the northern part of Taiwan and have had oily skin, acne, and sensitive skin since puberty.
My oiliness was so severe that I needed to use several oil-absorbing sheets, as regular tissue couldn't manage the shine.
However, after moving to Kaohsiung for university last September, I found that the problem was resolved.
Using the same skincare products (a basic moisturizing serum and lotion for sensitive skin), my skin's oil production returned to normal, with only a slight shine.

In Kaohsiung, I was also diagnosed with rosacea (which I learned was not just simple sensitivity), but after taking medication for a while, it rarely recurred.
It only flared up again when I returned to school after winter break, which might be due to the significant difference in weather between the north and south affecting my skin stability.

However, the oiliness issue is quite pronounced; when I return home on weekends, it's no exaggeration to say that my skin becomes extremely oily by that same night, and it only returns to normal once I go back to Kaohsiung.
Why is the oiliness affected by location? Is it because the northern region is more humid? I would like to know what methods can help resolve this issue and improve the severe oiliness.
After washing my face, it takes less than five minutes for the shine to return, and my skincare products don't seem to absorb well, leaving my face oily and dull, in stark contrast to the healthy, bright glow I have in Kaohsiung.
It's very frustrating.

Tongxue, 10~19 year old female. Ask Date: 2022/05/12

Dr. Wu Yuxin reply Dermatology

Indeed, the level of oiliness is significantly related to the environment and climate, so cleansing should be adjusted accordingly.

Reply Date: 2022/05/12

More Info

The issue of oily skin and acne can be particularly frustrating, especially when it seems to vary based on geographical location. Your experience of having oily skin and acne in the north, which improved significantly when you moved to Kaohsiung, can be attributed to several factors, including humidity, temperature, and even lifestyle changes.

Understanding Oily Skin and Acne
Oily skin is primarily caused by the overproduction of sebum, the natural oil produced by sebaceous glands. This can be influenced by hormonal changes, genetics, and environmental factors. In humid climates, such as that of Kaohsiung, the skin may actually produce less oil because the moisture in the air can help to keep the skin hydrated. Conversely, in the northern regions where the climate may be cooler and drier, the skin can become dehydrated, prompting the sebaceous glands to produce more oil to compensate for the lack of moisture.

Regional Effects on Skin
1. Humidity and Temperature: The high humidity levels in Kaohsiung can help to balance the skin's moisture levels, reducing the need for excess oil production. In contrast, the drier air in northern regions can lead to dehydration, which may trigger an increase in oil production as the skin attempts to protect itself.

2. Lifestyle Factors: Moving to a new city often comes with changes in lifestyle, including diet, stress levels, and daily routines. These factors can also significantly impact skin health. For instance, if your diet improved or if you experienced less stress in Kaohsiung, this could contribute to better skin conditions.

3. Skin Conditions: You mentioned being diagnosed with rosacea (酒糟肌膚) in Kaohsiung. This condition can cause redness and sensitivity, and it often requires specific treatments. The fact that your rosacea improved with medication suggests that your skin may have been reacting to environmental factors in the north that exacerbated the condition.

Why Does Oiliness Flare Up?
When you return to the north, the sudden change in humidity and temperature can lead to a rapid increase in oil production. The skin may react to the environmental stressors by becoming more reactive, leading to an increase in oiliness and potentially triggering acne. The use of certain skincare products that work well in one climate may not be as effective in another, leading to issues with product absorption and overall skin health.

Recommendations for Managing Oily Skin
1. Hydration: Ensure that you are adequately hydrating your skin, even in drier climates. Use a lightweight, non-comedogenic moisturizer that can help maintain skin hydration without clogging pores.

2. Gentle Cleansing: Use a gentle cleanser that can help remove excess oil without stripping the skin of its natural moisture. Avoid harsh soaps that can lead to increased oil production.

3. Exfoliation: Regular exfoliation can help remove dead skin cells that may clog pores and lead to acne. However, be cautious not to over-exfoliate, as this can irritate the skin and exacerbate oiliness.

4. Topical Treatments: Consider using topical treatments that contain ingredients like salicylic acid or benzoyl peroxide, which can help manage acne and reduce oiliness. However, consult with a dermatologist to find the right balance for your skin type.

5. Diet and Lifestyle: Pay attention to your diet and lifestyle. Foods high in sugar and dairy can sometimes exacerbate acne. Incorporating a balanced diet rich in fruits, vegetables, and whole grains can support overall skin health.

6. Consult a Dermatologist: If your oily skin and acne persist, it may be beneficial to consult a dermatologist who can provide tailored advice and treatment options based on your specific skin type and concerns.

In conclusion, the geographical differences in climate can significantly impact your skin's behavior, particularly regarding oil production and acne. By understanding these factors and implementing a consistent skincare routine, you can better manage your oily skin and maintain a healthy complexion.

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