We conducted one of the most comprehensive user studies on silk pillowcases to measure real-world effects on skin, hair, and sleep. Below are the key findings from the pre-study and the 30-day controlled test.
Study Design
- Pre-study: 154 participants aged 18 to 75 (median 42.5) surveyed on skin, hair, and sleep concerns
- 30-day test: Participants slept exclusively on the Moonchild silk pillowcase for 30 consecutive nights
- Follow-up: Valid paired responses; all participants confirmed they slept on the silk pillowcase for the full 30 nights
Pre-Study: Key Pain Points
Before the test phase, we identified the most pressing concerns among the participants:
Skin
- 89 % wake up with fine lines and wrinkles on their face
- 79 % feel that their pillow absorbs their creams and serums
- 79 % report that their skin is prone to redness
- 67 % are dissatisfied with their skin appearance
Hair
- 90 % say their hair looks unruly or messy in the morning
- 82 % experience split ends
- 77 % experience hair breakage
Sleep & Sustainability
- 79 % tend to sweat at night
- Only 56 % report sleeping well
- 51 % sleep 6 hours or less
- 74 % consider sustainable products very important
Strongest pain points from the pre-study:
- “Unruly hair in the morning”
- “Fine lines in the morning”
- “Pillow absorbs my skincare products”
Results After 30 Nights
1. Did participants solve their beauty concern?
| Response | Share |
|---|---|
| Both equally (wrinkles + split ends) | 39 % |
| Wrinkles | 28 % |
| Split ends | 22 % |
| None | 11 % |
89 % of participants reported solving at least one of their main beauty concerns.
2. Before vs. After Comparison (Mean Scores, Scale 0–5)
(0 = strongly disagree, 5 = strongly agree)
| Metric | Before | After | Change |
|---|---|---|---|
| Unruly / messy hair | 4.00 | 1.39 | –2.61 |
| Split ends | 3.94 | 1.33 | –2.61 |
| Hair breakage | 3.78 | 1.44 | –2.33 |
| Pillow absorbs creams & serums | 3.11 | 1.17 | –1.94 |
| Skin redness | 3.22 | 1.50 | –1.72 |
| Acne / blemishes | 2.83 | 1.33 | –1.50 |
| Night sweating | 3.06 | 1.83 | –1.22 |
| Skin feels hydrated | 2.50 | 3.72 | +1.22 |
| Skin feels soothed | 2.56 | 3.67 | +1.11 |
| Satisfaction with skin appearance | 2.17 | 3.22 | +1.06 |
| Sleep quality | 2.61 | 3.72 | +1.11 |
| Skin feels smooth | 2.78 | 3.78 | +1.00 |
| Healthy skin barrier | 2.39 | 3.39 | +1.00 |
The strongest improvements were observed in hair-related metrics. Unruly hair, split ends, and hair breakage each improved by more than 2.3 points on the scale.
3. Wrinkle Reduction
In the pre-study, participants rated the statement “I wake up with fine lines and wrinkles on my face” with a mean score of 3.56. 89 % reported this as a clear issue (score ≥ 3).
After using the silk pillowcase, the same participants were asked whether fine lines and wrinkles had been reduced:
| Statement | Mean Score | Share score ≥ 3 | Share score ≥ 4 |
|---|---|---|---|
| Fine lines & wrinkles reduced on the first morning | 2.44 | 50 % | 22 % |
| Fine lines & wrinkles reduced after 30 nights | 3.17 | 89 % | 33 % |
- Already on the first morning, 72 % noticed a reduction in fine lines and wrinkles (score ≥ 2). For most, the effect was still mild to moderate.
- After 30 nights, 89 % confirmed a clear reduction — matching the exact share of participants who had reported the problem in the pre-study.
4. Share of Participants with Clear Improvement
| Criterion | Share with clear improvement |
|---|---|
| Split ends clearly improved | 83 % |
| Less unruly hair | 78 % |
| Less hair breakage | 78 % |
| Skin more hydrated | 78 % |
| Skin smoother | 67 % |
| Better sleep quality | 67 % |
| Less redness | 61 % |
| Higher satisfaction with skin appearance | 61 % |
Summary of Key Findings
- Hair showed the strongest effect — unruly hair, split ends, and breakage improved by more than 2.3 points on average.
- Wrinkle reduction was confirmed by 89 % of participants after 30 nights — the same share that had reported waking up with fine lines and wrinkles in the pre-study.
- Skincare products stay on the skin — the perception that the pillow absorbs creams and serums dropped sharply (from 3.11 to 1.17).
- Skin feel improved measurably — hydration, smoothness, and overall satisfaction with skin appearance increased clearly.
- 89 % of participants solved their beauty concern (wrinkles, split ends, or both).
Study notes: 30-day-clinical study in collaboration with dermatologist Dr. Marion Runnebaum. Results reflect self-reported outcomes from a 30-day real-world user test with 154 paired participants.
