2026-07-03
Lifestyle Habit Correction Part 5 - So, What Should I Use? – A Dermatologist's Criteria
A dermatologist explains the best skincare products to use, emphasizing that a simple routine with gentle, low-irritation cleansers and minimal moisturizers is key to healthy skin.

1️⃣ The Conclusion So Far
To summarize everything so far in one line:
👉 The simpler your skincare, the better your skin gets.
Applying too many products builds up irritation,
Over-washing breaks down the skin barrier,
Rubbing damages the skin,
And exfoliating makes it even weaker.
👉 So, the final question remains:
‘Then what should I use?’
2️⃣ ‘Criteria’ Are More Important Than Products
Many people ask, ‘Please recommend good cosmetics,’
But what is actually more important is
👉 A criterion that fits your skin condition.
In dermatology, we prioritize products that are:
Low in irritation,
Simple in ingredients,
And focused on moisturizing.
👉 The key is this:
Fewer unnecessary ingredients is better than ‘good’ ingredients.
3️⃣ Cleansing Is the Most Important
In skincare,
👉 The step that ruins the skin the most is
👉 Cleansing.
So the criterion is simple:
👉 Washing with less irritation is better than washing thoroughly.
4️⃣ Types of Cleansing Products, Explained Simply
Cleansing products are not just about ‘types,’
👉 It is about the difference in irritation intensity and how they work.
❌ Not Recommended – Liquid Cleansers (Cleansing Water)


Cleansing water requires wiping with a cotton pad.
During this process,
👉 Repeated friction occurs,
And due to the nature of the product,
👉 It strips away both moisture and lipids,
👉 Leaving the skin dry.
👉 As a result,
The barrier weakens,
Dermatitis worsens,
And sensitivity can increase.
👉 We especially do not recommend it for sensitive skin.
❌ Not Recommended – Cleansing Oil / Cleansing Balm


They have excellent cleansing power, but
During this process,
👉 Skin lipids are easily stripped away,
And during the emulsification process,
👉 Irritation may occur,
👉 Or residue may be left behind,
Which can sometimes trigger breakouts.
👉 Therefore, caution is needed for sensitive / acne-prone skin.
✔ Recommended – Low-Irritation Cleansers
👉 These are the most reliably used types in dermatology.
✔ Cleansing Milk / Cleansing Cream
This formulation
👉 Gently removes impurities and makeup
Without excessively stripping away skin lipids.
👉 Especially for
Dry skin,
Sensitive skin,
And after laser treatments,
👉 These are the most suitable for such cases.
✔ Cleansing Gel
This is a formulation widely used in dermatology these days.
Its characteristics are:
Low irritation,
Many are slightly acidic,
And they offer a good balance of cleansing power and mildness.
👉 Especially for
Sensitive skin,
Rosacea,
And acne-prone skin,
👉 They can be used relatively safely for all of these.
👉 One-line summary:
A middle ground that is milder than foam and lighter than milk.
✔ Cleansing Foam (Conditional)
👉 It can be used, but
👉 It must be ‘slightly acidic.’
5️⃣ Why Is a Slightly Acidic Cleanser Important?

The skin naturally maintains a slightly acidic environment (pH 4.5–5.5).
When this environment is maintained,
The barrier remains stable,
Moisture is retained,
And bacterial growth is suppressed.

However, if you use an alkaline cleanser,
👉 This balance is disrupted,
Making the skin dry,
Causing tightness,
And increasing sensitivity.
👉 So, if your skin feels tight after washing, you are already over-cleansing.
6️⃣ You Won't Fail If You Choose Like This
👉 These are actually the most practical criteria:
Products that do not leave your skin feeling tight after washing
Products without a strong fragrance
Products with a simple ingredient list
‘Hypoallergenic / For sensitive skin’ lines
👉 Meeting just these criteria will reduce most skin problems.
7️⃣ Keep Moisturizing Simple
Moisturizing doesn't need to be complicated.
👉 The key is to create a protective barrier over the skin.
So,
One cream,
Adding a lotion if necessary,
This is often more than enough.
👉 Rather,
If you layer multiple products,
Ingredients overlap,
Irritation increases,
And breakouts can occur.
8️⃣ The Most Important Criterion
👉 What is more important than good cosmetics is
👉 Irritating the skin less.
Before adding products,
👉 Reducing,
👉 Simplifying,
👉 And minimizing irritation
👉 This comes first.
9️⃣ Conclusion
The skin
👉 Is not something that improves the more you manage it, but rather something that recovers the more you protect it.
👉 So, rather than ‘What should I apply?’
‘How can I irritate it less?’ is more important.
👉 Even with the same cosmetics, the results can be completely different depending on your skin condition.
👉 If your skin is sensitive, it is important to check your current skin condition first rather than changing products on your own.