How does the skin's turnover cycle change with age?

Generally, in the 20s, it is about a 28-day cycle, but it extends with aging. In the 40s, it is about 45 days, and after the 50s, it can extend to about 55 to 75 days.

Why is it necessary to reassess skincare after the 30s?

Because the turnover cycle slows down with age, leading to more skin issues such as dullness, dryness, and fine lines. It is important to reassess and strengthen hydration and exfoliation care according to age.

What were the main results of the awareness survey conducted by IC Clinic?

72.8% mistakenly believed the turnover cycle is 28 days, and 83.0% were unaware that the cycle can double with age.

What is the role of the stratum corneum?

It is the outermost layer of the skin, about 0.02mm thick, and it serves as a barrier to protect the skin from external stimuli and to retain moisture by preventing water evaporation.

What are the recommended skincare routines by age?

In the 30s, focus on enhancing hydration. In the 40s, prioritize exfoliation and whitening care. After the 50s, low-irritation and high-hydration care is recommended.

AI News NQ Analysis

[Time Day x Skin Time Survey] 72.8% Believe Turnover is 28 Days; 83.0% Unaware Cycle Doubles with Age

NQ Score 83/100

N1 Content Completeness 9

Key facts

[Time Day x Skin Time Survey] 72.8% Believe Turnover is 28 Days; 83.0% Unaware Cycle Doubles with Age
I-See Clinic conducted a survey on skin turnover for 'Time Day.' Findings reveal that 80% are unaware that turnover slows with age, mistakenly believing it remains a fixed 28-day cycle.
Source: PR TIMES
Date: Wed Jun 10 2026 18:00:01 GMT+0900 (Japan Standard Time)

Direct answer

I-See Clinic conducted a survey on skin turnover for 'Time Day.' Findings reveal that 80% are unaware that turnover slows with age, mistakenly believing it remains a fixed 28-day cycle.

Citation: [Time Day x Skin Time Survey] 72.8% Believe Turnover is 28 Days; 83.0% Unaware Cycle Doubles with Age (Wed Jun 10 2026 18:00:01 GMT+0900 (Japan Standard Time)), PR TIMES
Source: PR TIMES
Date: Wed Jun 10 2026 18:00:01 GMT+0900 (Japan Standard Time)

AI Summary (NQ-processed)

I-See Clinic conducted a survey on skin turnover for 'Time Day.' Findings reveal that 80% are unaware that turnover slows with age, mistakenly believing it remains a fixed 28-day cycle.

AI Analysis

Frequently Asked Questions

Q: How does the skin's turnover cycle change with age?: A: Generally, in the 20s, it is about a 28-day cycle, but it extends with aging. In the 40s, it is about 45 days, and after the 50s, it can extend to about 55 to 75 days.
Q: Why is it necessary to reassess skincare after the 30s?: A: Because the turnover cycle slows down with age, leading to more skin issues such as dullness, dryness, and fine lines. It is important to reassess and strengthen hydration and exfoliation care according to age.
Q: What were the main results of the awareness survey conducted by IC Clinic?: A: 72.8% mistakenly believed the turnover cycle is 28 days, and 83.0% were unaware that the cycle can double with age.
Q: What is the role of the stratum corneum?: A: It is the outermost layer of the skin, about 0.02mm thick, and it serves as a barrier to protect the skin from external stimuli and to retain moisture by preventing water evaporation.
Q: What are the recommended skincare routines by age?: A: In the 30s, focus on enhancing hydration. In the 40s, prioritize exfoliation and whitening care. After the 50s, low-irritation and high-hydration care is recommended.