Lactiplantibacillus plantarum HY7714,
does it really help with Improvement of skin hydration, elasticity, and UV-related skin aging?
research showsA randomized double-blind placebo-controlled trial in 110 participants found improvements in skin hydration, wrinkle depth, gloss, and elasticity after 12 weeks of HY7714 at 10 billion CFU daily. The rating is C because this was a single branded-strain trial involving many investigators employed by the developer, Korea Yakult, with no independent replication. Individual regulatory recognition confirms that a study exists but does not raise the evidence grade.
ads claimMarketing can bundle the phrases 'oral skin probiotic,' 'UV skin-damage defense,' 'wrinkle improvement,' and 'elasticity recovery.' Direct human evidence is concentrated in one specific HY7714 dose, one strain, one 12-week study, and a selected group of middle-aged women.
Useful facts when choosing a product
- In Korea, HY7714 is distributed as an individually recognized probiotic ingredient for skin hydration and maintenance of skin health against UV-related damage.
- The pivotal trial used HY7714 at 1×10^10 CFU/day for 12 weeks.
- Other L. plantarum strains and generic mixed probiotics cannot be assumed to reproduce HY7714 results.
- Probiotics are generally tolerated, but rare invasive infections require separate caution in people who are severely ill, immunocompromised, or have central venous catheters.
What the research actually shows
The 2015 trial by Lee and colleagues randomized 110 women aged 41 to 59 with dry skin and wrinkles to HY7714 at 1×10^10 CFU/day or placebo for 12 weeks. It reported improvements in hydration, wrinkle depth, gloss, and elasticity, including a 21.73% between-group improvement in elasticity at week 12. Many authors were affiliated with Korea Yakult. The 2020 study by Nam and colleagues enrolled 15 women and had 13 completers in an uncontrolled exploration of microbiota, plasma markers, and skin measures; all authors were company employees and the company supported their salaries. The 2014 photoaging study by Kim and colleagues was conducted in hairless mice and is not human replication.
Why this is classified as C (50)
A 110-person trial with instrumental skin measurements prevents a D or deferred rating. Because positive evidence is concentrated in developer-linked research on one branded strain without large independent replication, the rule ②-b cap applies and the score is C with 52 points.
Counterpoint. A multicenter independent trial using the same strain and dose could justify an upgrade if it replicates clinically meaningful and durable changes in wrinkles and hydration.
Rejudgment record. New verdict — Accepted the positive 110-person trial but applied the rule ②-b C cap for developer involvement, branded-strain concentration, and absent independent replication
Sub-claim grades by effect
This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.
| Effect (sub-claim) | Grade | Basis |
|---|---|---|
| Skin hydration | C | A 110-person trial found facial and hand hydration and transepidermal water-loss signals, but evidence is developer-concentrated and unreplicated independently |
| Photoaging, wrinkles, and elasticity | C | Wrinkle-depth and elasticity measurements were positive, but evidence is concentrated in one branded-strain trial and preclinical mechanisms |
Cross-check — Codex and Claude
Evidence Table
| Study | Design | Sample | Funding | Endpoint | Result | Weight |
|---|---|---|---|---|---|---|
| Lee DE et al. 2015 | Randomized double-blind placebo-controlled trial | 110 | Many authors were affiliated with Korea Yakult; developer-owned strain | Skin hydration, transepidermal water loss, wrinkle depth, gloss, and elasticity | Reported between-group improvements in hydration, wrinkle depth, gloss, and elasticity after 12 weeks at 1×10^10 CFU/day. | Key |
| Nam B et al. 2020 | Uncontrolled exploratory human study | 13 | Korea Yakult employee authors and company salary support | Gut microbiota, plasma markers, and skin measures | Reported changes over eight weeks, but the lack of a control group prevents efficacy confirmation. | Supportive |
| Kim HM et al. 2014 | Preclinical UVB-irradiated hairless-mouse study | Led by Korea Yakult investigators | Epidermal thickness, wrinkles, collagen-degrading enzymes, and skin hydration | Reported preclinical photoaging-protection signals, but these are not human clinical outcomes. | Mechanistic |
Receipt — 3 References
All 3 cited sources were verified for existence at the original page (as of 2026-07-18).
Reviewed and approved: Chamgap Editorial Team · Approval date: 2026-07-18 · Corrections: none
Cite this verdict
[Chamgap] Lactiplantibacillus plantarum HY7714 x skin hydration, elasticity, and photoaging — Evidence Grade C·50. 3 cited sources checked. Source: https://chamgap.com/en/verdicts/skin-hair/lactiplantibacillus-plantarum-hy7714-skin-aging/ · CC BY 4.0CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.
What this document does and does not do
Chamgap is an information source. It reports what research has and has not confirmed; it does not tell readers what to take or buy. That decision belongs to readers and, when needed, medical or legal professionals. This verdict reflects literature available up to the search date and may change as new research appears. Nothing here is medical advice.