What is closed acne?
Closed comedones, also known as closed comedones or whiteheads, are a common type of acne. It usually appears as small particles under the surface of the skin, with no obvious openings and therefore difficult to squeeze out. The formation of this type of acne is closely related to factors such as excessive secretion of sebaceous glands, abnormal keratinization of hair follicles, and bacterial infection. In recent years, with the improvement of skin care awareness, the causes, prevention and treatment methods of closed acne have become one of the hot topics on the Internet.
The following is the hot discussion and data analysis on closed acne on the Internet in the past 10 days:

| keywords | Search volume (daily average) | Main discussion platform |
|---|---|---|
| Causes of long closed acne | 15,000 | Xiaohongshu, Zhihu |
| Closed acne treatments | 12,000 | Weibo, Bilibili |
| Skin care product recommendations | 18,000 | Douyin, Taobao |
| The relationship between diet and acne | 8,000 | WeChat public account |
1. Causes of closed acne
The main causes of closed acne include the following aspects:
1.Excessive sebum secretion: During puberty or endocrine disorders, sebaceous glands secrete strongly and easily clog pores.
2.Abnormal keratinization of hair follicles: Excessive thickness of the stratum corneum causes the hair follicle opening to be clogged and sebum cannot be discharged normally.
3.bacterial infection: Propionibacterium acnes multiplies in hair follicles and triggers an inflammatory reaction.
4.external factors: The use of greasy skin care products, environmental pollution or improper cleaning methods may also induce closed comedones.
2. Preventive methods for closed acne
The key to preventing closed acne lies in daily skin care and adjustments to lifestyle habits:
1.gentle cleansing: Choose a cleansing product suitable for your skin type to avoid damage to the skin barrier caused by over-cleansing.
2.Exfoliate regularly: Use salicylic acid or fruit acid products to help unclog pores, but pay attention to the frequency.
3.Moisturizing and oil control: Maintain skin water and oil balance and reduce sebum secretion.
4.diet modification: Reduce the intake of high-sugar and high-fat foods and eat more fruits and vegetables rich in vitamins.
3. Treatment methods for closed acne
For long closed acne that has formed, the following treatment measures can be taken:
| Treatment | Applicable people | Things to note |
|---|---|---|
| Topical retinoic acid | Mild closed comedones | It needs to be protected from light, and pregnant women are not allowed to use it. |
| Salicylic acid peel | Those with thicker stratum corneum | Tolerance needs to be established to avoid irritation |
| Medical aesthetic treatment | Stubborn closed acne | Requires professional doctor operation |
| Chinese medicine conditioning | Endocrine disorders | Requires long-term persistence |
4. Common misunderstandings and answers
1.Myth: Closed acne can be squeezed out
Answer: Forcible squeezing may aggravate inflammation or leave scars. Professional care or medication is recommended.
2.Myth: Closed acne will disappear on its own
Answer: Some acne may resolve on its own, but most require intervention, otherwise it may develop into inflammatory acne.
3.Myth: Only oily skin will cause closed acne
Answer: Any skin type may develop closed acne, and dry skin may also be caused by abnormal keratin metabolism.
5. Summary
Closed acne is a common skin problem, and its formation is related to a variety of factors. This problem can be effectively prevented and improved through scientific skin care methods, reasonable dietary adjustments, and appropriate treatments. If the symptoms are severe or have not been relieved for a long time, it is recommended to seek medical treatment in time and seek help from a professional dermatologist.
With the popularization of skin care knowledge, more and more people are paying attention to the causes and treatments of closed acne. In the future, personalized skin care and precision medicine may bring more effective solutions to this problem.
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