Beauty of Joseon Glow Serum : Propolis + Niacinamide vs The Ordinary Niacinamide 10% + Zinc 1%

Beauty of Joseon Glow Serum : Propolis + Niacinamide

• GLYCERIN Skin effect
  Combined effects of glycerol and petrolatum in an emollient cream: A randomized, double-blind, crossover study in healthy volunteers with dry skin

  In a randomized, double-blind, four-arm crossover study of 51 healthy volunteers with dry skin, an emollient containing glycerol and petrolatum raised corneometry-measured skin moisture significantly above its vehicle (P < 0.0001) over 12 hours. The authors attributed the hydration gain to the glycerol component and the lower water loss to the petrolatum component.

  Human trial · 2020 · 51 people · healthy volunteers with dry skin (Kligman score 2 or 3) · Corneometry (skin moisture) and transepidermal water loss over 12 hours after one application. · Measured on the forearms. The significant hydration result comes from the full emollient containing both glycerol and petrolatum.

  PMID 31532576

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  Source:Combined effects of glycerol and petrolatum in an emollient cream: A randomized, double-blind, crossover study in healthy volunteers with dry skin
• GLYCERIN Skin effect
  Glycerol and the skin: holistic approach to its origin and functions

  Topical glycerol improves stratum corneum hydration, barrier function and skin mechanical properties. The review also reports reduced irritation response and faster wound healing, and traces the effect to aquaporin-3 transport and to glycerol's own presence in the skin.

  Review article · 2008 · Humans in the cited studies, plus animal and in-vitro work on mechanism · Leave-on products. The review discusses both healthy skin and skin with dry or barrier-impaired conditions such as atopic dermatitis. · A narrative review. It compiles mechanisms and results from other studies.

  PMID 18510666

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  Source:Glycerol and the skin: holistic approach to its origin and functions
• Sodium hyaluronate Skin effect
  Efficacy of cream-based novel formulations of hyaluronic acid of different molecular weights in anti-wrinkle treatment

  All five 0.1% hyaluronic acid creams tested, from 50 kDa to 2000 kDa, raised skin hydration and overall elasticity above the vehicle cream applied to the other eye at 60 days.

  Human trial · 2011 · 76 people · Women aged 30-60 with periocular wrinkles · 0.1% hyaluronic acid creams applied twice daily for 60 days to the eye area of women aged 30-60 with periocular wrinkles. · Sixty days, and the vehicle sat on the fellow eye. Hydration and elasticity were read by instruments. The volunteers were women aged 30-60 with eye-area wrinkles.

  PMID 22052267

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  Source:Efficacy of cream-based novel formulations of hyaluronic acid of different molecular weights in anti-wrinkle treatment
• Tea tree leaf extract Skin effect
  Efficacy and Safety of Melaleuca alternifolia (Tea Tree) Oil for Acne — A Systematic Review and Meta-Analysis

  A 2026 systematic review and meta-analysis pooled seven clinical studies of tea tree oil for acne (445 patients in total). Acne severity was lower with tea tree oil than with the control treatments (pooled odds ratio 0.74, 95% CI 0.63 to 0.88), adverse events were mostly local and mild, and the reviewers judged the overall risk of bias as low.

  Review article · 2026 · 445 people · patients across seven clinical studies of acne · Acne severity across seven clinical studies of topical tea tree oil, the condition that most often starts in the teenage years. · The pooled result is a modest reduction in severity. The seven studies used different tea tree oil formulations and the follow-up was short; the authors call for larger trials with standardised formulas. It also reports more mild itching, dryness and stinging in some comparisons.

  PMID 42098589

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  Source:Efficacy and Safety of Melaleuca alternifolia (Tea Tree) Oil for Acne — A Systematic Review and Meta-Analysis