Azelaic acid, Dermatology FAQ - Page 4

Share to:
Effective Ways to Minimize Enlarged Pores on Your Skin

How to minimize pores? Doctor, what methods are effective in reducing the appearance of enlarged pores?


Dr. Zheng Lizhen Reply:
Hello! The size of pores is genetically determined, so achieving pores that are so small they are invisible does require some natural talent! However, pores can appear larger due to blackheads and external oil buildup stretching them. In addition to maintaining proper cleanliness...

[Read More] Effective Ways to Minimize Enlarged Pores on Your Skin


Are Whitening Products Safe for Pregnant Women? Expert Insights

Is it suitable for pregnant women to apply whitening products? Is it suitable for pregnant women to use whitening products sold at specialty stores? Does medical skincare like L-ascorbic acid have any implications? Should daily sunscreen, hair creams, and powder lipsticks be avoi...


Dr. Chen Yiying Reply:
Hello: In response to your question, generally speaking, the concentration of topical products absorbed through the skin into the bloodstream is limited, so the likelihood of affecting the fetus is extremely low. Common products like L-ascorbic acid (Vitamin C) and sunscreen can ...

[Read More] Are Whitening Products Safe for Pregnant Women? Expert Insights


Understanding Blackheads: Causes and Effective Solutions for Your Nose

Nasal comedones Hello, doctor: I would like to ask how blackheads form on the nose, and what are the solutions to this issue?


Dr. Zheng Lizhen Reply:
Acne is caused by excessive keratinization at the opening of the pores, which blocks them. The accumulation of keratin and lipids in the mid-follicle gradually expands and forms acne. Treatment options include the topical use of retinoids, alpha hydroxy acids, and azelaic acid to...

[Read More] Understanding Blackheads: Causes and Effective Solutions for Your Nose


Boost Your Metabolism: Clear Acne Scars and Enhance Weight Loss

How can I boost my metabolism? Why have the post-inflammatory hyperpigmentation scars from the acne I had three to four years ago still not faded and remain very noticeable? Also, my weight loss results are not as good as those of others. A friend who works as a beautician said t...


Dr. Jiang Zheen Reply:
Dear Chiu: You should consult a dermatologist, maintain a positive mood, eat plenty of fruits and vegetables, practice thorough sun protection, and use some depigmenting agents such as L-ascorbic acid, kinetin, azelaic acid, hydroquinone, and retinoic acid, which can all contribu...

[Read More] Boost Your Metabolism: Clear Acne Scars and Enhance Weight Loss


Effective Ways to Minimize Pores and Fade Acne Scars

How to minimize the appearance of pores? Hello, I would like to ask how to improve the appearance of enlarged pores after recently having blackheads extracted. Additionally, I have some scars on my face from previous acne; what can I do to help fade them?


Dr. Zheng Lizhen Reply:
1. After acne is extracted, the enlarged pores typically gradually return to their original size; however, if there are indentations caused by improper squeezing, the recovery is limited. 2. Acne can leave behind red or hyperpigmented spots, which are considered pseudo-scars. The...

[Read More] Effective Ways to Minimize Pores and Fade Acne Scars


Will My Acne Scar Fade Naturally or Do I Need Treatment?

Scar Hello doctor, I would like to ask you about a pimple that I had on my skin. I managed to pick it off, but it left a noticeable scar. Will the scar fade away on its own, or do I need to apply medication? If so, what should I use to help reduce the scar? Thank you!


Dr. Zheng Lizhen Reply:
Acne scars can be categorized into "true scars" (atrophic or hypertrophic scars) and "false scars" (erythema or hyperpigmentation). True scars, specifically atrophic scars, can be treated with dermabrasion, with laser resurfacing being the most common method u...

[Read More] Will My Acne Scar Fade Naturally or Do I Need Treatment?


Effective Solutions for Persistent Blackheads: Expert Dermatologist Advice

Acne Hello, Doctor: I have a lot of blackheads, and I have tried various products (such as nose strips, clindamycin, etc.) without any success. Is there any method that can help resolve this issue? Thank you.


Dr. Zheng Lizhen Reply:
For blackheads, it is advisable to use soap or facial cleansers with appropriate ingredients and strength, washing the face once in the morning and once at night, and then gently patting dry with a towel. Do not forcefully squeeze them, as improper squeezing can lead to inflammat...

[Read More] Effective Solutions for Persistent Blackheads: Expert Dermatologist Advice


Understanding Dark Circles: Causes, Types, and Treatment Options

I am greatly troubled by dark circles under my eyes? Hello, Doctor: I apologize for having multiple questions. I would like to ask: 1. What causes dark circles? I have normal and sufficient sleep, yet they are still very noticeable. Could this be related to anemia or my constitut...


Dr. Chen Yiying Reply:
Hello, Miss Freedom: The causes of dark circles can generally be categorized into three types: (1) Poor circulation type: This is more common in individuals who stay up late or have allergic rhinitis and chronic nasal congestion. (2) Pigmentation type: This is often seen in those...

[Read More] Understanding Dark Circles: Causes, Types, and Treatment Options


Effective Remedies for Insect Bites and Skin Care in Teens

My skin Hello! I am 14 years old. I don't go out often, but my calves are frequently bitten by mosquitoes or insects. Sometimes I apply alcohol, baby oil, and medications (Sebo De Matcho, Terramycin), but they don't seem to help, meaning I still get bitten. Is this an a...


Dr. Zheng Lizhen Reply:
Reactions to mosquito bites vary from person to person. It is advisable to avoid scratching to prevent secondary bacterial infections, as this could prolong the healing process. It is best to consult a dermatologist for appropriate treatment. To reduce post-inflammatory hyperpigm...

[Read More] Effective Remedies for Insect Bites and Skin Care in Teens


Effective Treatments for Scars and Dark Spots on Skin

Scars / Hyperpigmentation Hello, doctor. About 5 to 6 years ago, I had symptoms similar to eczema on my legs, which included redness, swelling, small blisters, and itching. I may have scratched the blisters at that time, resulting in very noticeable dark scars on my legs today. I...


Dr. Zheng Lizhen Reply:
To remove hyperpigmentation, you can use whitening skincare products containing vitamin C derivatives, L-ascorbic acid, alpha hydroxy acids, kojic acid, or arbutin. Additionally, dermatologists may prescribe medications containing hydroquinone, azelaic acid, or retinoids based on...

[Read More] Effective Treatments for Scars and Dark Spots on Skin


Effective Methods to Minimize Pore Size for Clearer Skin

Pore reduction Are there any methods to minimize the appearance of pores? Thanks!!


Dr. Zheng Lizhen Reply:
The size of pores is genetically determined, and astringents only provide temporary effects, so achieving pores that are invisible truly requires some natural talent! However, pores can appear larger due to the presence of acne and external oil buildup that stretch them. In addit...

[Read More] Effective Methods to Minimize Pore Size for Clearer Skin


Expert Answers to Common Dermatology Questions: Acne, Vitamin C, and More

Consultation Inquiry Hello, doctor. I hope you don't mind answering my questions. Question 1: Is ice therapy effective for acne? Question 2: There was a report in the "Common Health" magazine about the remarkable effects of Isdin's Dehydroascorbic Acid (Vi...


Dr. Zheng Lizhen Reply:
1. When acne is severely inflamed, you can first apply a cold compress locally to alleviate redness, swelling, and pain, and consult a dermatologist for treatment. 2. Unclear. 3. No. 4. Currently, products like retinol and aldehyde are less likely to cause irritation and photosen...

[Read More] Expert Answers to Common Dermatology Questions: Acne, Vitamin C, and More


Dealing with Red Bumps on Your Face: Causes and Solutions

There are many small red spots on my face! Hello Dr. Zheng: I hardly had acne during puberty, but I started to develop adult acne after entering college. Additionally, my skin is quite fair, so acne scars are slow to fade! (I occasionally apply topical treatments similar to retin...


Dr. Zheng Lizhen Reply:
It is recommended that you have a dermatologist examine the small red spots on your face. Regarding the dryness of your facial skin, consider that using tretinoin can commonly lead to dryness and peeling. You may be applying too much medication or using a cleanser that is too har...

[Read More] Dealing with Red Bumps on Your Face: Causes and Solutions


Effective Solutions for Persistent Blackheads and Enlarged Pores

Blackheads Hello Dr. Cheng: I have been struggling with severe blackheads on my nose and chin since puberty. Generally, I have never been able to completely clear them out. Whether I have facials done or try to extract them myself using pore strips or a comedone extractor, they s...


Dr. Zheng Lizhen Reply:
To clear acne, salicylic acid, retinoids, alpha hydroxy acids (AHAs), and azelaic acid can be used as exfoliating agents to gradually soften and remove comedones. While pore strips may provide immediate satisfaction in extracting blackheads, their excessive and aggressive use is ...

[Read More] Effective Solutions for Persistent Blackheads and Enlarged Pores


Effective Solutions for Blackheads and Enlarged Pores

The issues of blackheads and enlarged pores? Hello, I would like to ask: Since puberty, the tip of my nose and the sides of my nostrils have been what you would call "strawberry" skin, and now that I am older, there has been no improvement; in fact, the "strawberry...


Dr. Zheng Lizhen Reply:
To clear acne, exfoliating agents such as salicylic acid, retinoids, alpha hydroxy acids, and azelaic acid can be used to gradually soften and remove comedones. While pore strips may provide immediate satisfaction, their aggressive nature makes them unsuitable for frequent use, a...

[Read More] Effective Solutions for Blackheads and Enlarged Pores


Which Acne Treatment Works Best: Egg Yolk, Egg White, Aloe Vera, or La Free?

There are so many medications available; which ones are actually effective? The magazine says that applying egg yolk on the face is very effective for treating acne and has cured many people. My mom says that egg whites are more effective, but when I was getting my hair cut, some...


Dr. Jin Lianchun Reply:
Hello, Miss: 1. The methods you mentioned are not recognized medical treatments, so I do not understand them. 2. The pigmentation left by acne can be treated with topical medications, but it requires some time, including a. topical retinoids, b. topical azelaic acid. However, the...

[Read More] Which Acne Treatment Works Best: Egg Yolk, Egg White, Aloe Vera, or La Free?


Understanding Follicular Occlusion: Causes, Symptoms, and Treatments

Follicular occlusion Hello! I would like to ask what follicular occlusion is, what are its specific symptoms, what causes it, what are the solutions, and how long does the treatment take? I would appreciate your time in answering these questions. Thank you.


Dr. Zheng Lizhen Reply:
Follicular occlusion refers to the blockage of the hair follicle's opening or canal by keratin or foreign substances. Clinically, this is observed as enlarged pore openings with small bumps. If accompanied by a bacterial infection, it can lead to folliculitis. The solution i...

[Read More] Understanding Follicular Occlusion: Causes, Symptoms, and Treatments


Effective Treatments for Whiteheads: Prognosis, Medications, and Side Effects

Acne How should whitehead acne be treated? What is the prognosis? What are the current treatment medications? Are there any side effects?


Dr. Zheng Lizhen Reply:
Whiteheads are comedones with smaller or even closed openings. They can be gradually removed using exfoliants such as retinoids, alpha hydroxy acids, salicylic acid, and azelaic acid. Using a needle to puncture and extract the comedones is a quicker method, but excessive squeezin...

[Read More] Effective Treatments for Whiteheads: Prognosis, Medications, and Side Effects


How to Minimize Pores: Effective Laser Treatments for Acne Scars

Laser aesthetics I have enlarged pores due to acne, and the pores left from blackheads on my nose are also quite large. What can I do to minimize the appearance of my pores, ideally to the point where they are not visible? How effective is laser treatment for this? Thank you!


Dr. Zheng Lizhen Reply:
If acne is trapped in the pores causing them to enlarge, then removing the acne will allow the pores to return to their original size. To clear acne, exfoliating agents such as salicylic acid, retinoic acid, alpha hydroxy acids, and azelaic acid can be used to gradually soften an...

[Read More] How to Minimize Pores: Effective Laser Treatments for Acne Scars


Understanding Post-Laser Pigmentation: What You Need to Know

Post-laser hyperpigmentation..? Hello doctor, I developed faint dark spots on my arm during the fourth and fifth grades of elementary school, which have been a long-term concern for me. Since the area is quite large, I underwent laser treatment in late June in Pingtung, but it re...


Dr. Zheng Lizhen Reply:
Post-laser pigmentation is not only a source of distress for patients but also a significant concern for dermatologists. This issue is closely related to the patient's constitution, the treatment method, the type and dosage of the laser used, post-procedure wound care, and s...

[Read More] Understanding Post-Laser Pigmentation: What You Need to Know


Previous|Page