Skin, hair, and nails

Research reporting outcomes related to skin, hair, and nails.

Research topic: Skin, hair, and nails

Counts beside ingredients cover this research topic. Outcome-group counts and study conditions are available in the details.

Chondroitin
Representative outcomeHuman studies reported a within-group change in skin dryness/scaling.
Animal and cell findings do not establish the same effect in people.
The confirmed comparison studies tested several ingredients together. They cannot isolate the effect of this ingredient.
Publications for this topic: 3
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Representative outcome and study details
Human studies reported a within-group change in skin dryness/scaling.
combination-ingredient studies · Individual ingredient effects cannot be separated · Human studies · within-group comparison
1 publications linked to this result
Study limits and review notes (2)
Route, form, dose, or population details are incomplete, so the findings cannot be confirmed as directly comparable.
Combination, formula, or class studies do not isolate this ingredient or establish synergy.
Collagen
Representative outcomeStudies with an unspecified organism reported between-group improvement in Skin hydration.
Animal and cell findings do not establish the same effect in people.
Findings from a combination study cannot be attributed to this ingredient alone.
Publications for this topic: 31Publications needing review: 24
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Representative outcome and study details
Studies with an unspecified organism reported between-group improvement in Skin hydration.
These conditions come from related studies and may not describe a single paper.
Single-ingredient studies · Population not specified · between-group comparison
2 publications linked to this result
Study limits and review notes (1)
Study conditions differ; results are shown descriptively and are not pooled.
Hyaluronic Acid
Representative outcomeStudies with an unspecified organism reported a result with no confirmed comparison group in Skin Hydration.
The confirmed comparison studies tested several ingredients together. They cannot isolate the effect of this ingredient.
Partial research summary
Publications for this topic: 7Publications needing review: 5
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Representative outcome and study details
Partial research summary
Studies with an unspecified organism reported a result with no confirmed comparison group in Skin Hydration.
These conditions come from related studies and may not describe a single paper.
Single-ingredient studies · Human studies · Population not specified · comparator not confirmed
2 publications linked to this result (1 awaiting review included)
Study limits and review notes (3)
Study conditions differ; results are shown descriptively and are not pooled.
Some publications have not cleared source or interpretation review.
Some papers could not be reviewed, so this summary covers only findings that could be confirmed.

Other research records (11)

The counts above cover the selected topic only. This section also includes other topics, research without a confirmed comparison, animal or cell studies, and findings whose interpretation is held.

Biotin
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
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Caffeine
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
1 publications linked to this result (1 awaiting review included)
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
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Coenzyme Q10
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
1 publications linked to this result (1 awaiting review included)
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
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Creatine
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
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Niacin
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
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Probiotics
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
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Vitamin C
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
1 publications linked to this result (1 awaiting review included)
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
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Vitamin D
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
1 publications linked to this result (1 awaiting review included)
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
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Vitamin E
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
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Vitamin K
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
View Skin, hair, and nails research
Zinc
Some findings are held for review
Representative outcome and study details
Some findings are held for review
Some papers have not cleared source or result review, so their findings are not summarized yet.
No confirmed result is available to summarize with study conditions.
A distinct publication count is not available.
Study limits and review notes (1)
- Those papers are not summarized until review is complete.
View Skin, hair, and nails research

How to read this topic

Skin, hair, and nails

Chondroitin

Collagen

Hyaluronic Acid