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Shop Rejuran Healer Turnover Ampoule Dual Effect
Serum
Rejuran

Healer Turnover Ampoule Dual Effect

~$44· 1.01 Fl Oz (Pack of 1)

What it's good for

Key actives from our research database. Click any to read the full evidence dossier.

  • AdenosineModerate evidenceFull dossier ↗

    A Korean-approved anti-wrinkle ingredient that encourages collagen production for a smoother, firmer look.

    Good for: Anti-aging

  • Aloe VeraModerate evidenceFull dossier ↗

    Calms irritation and adds light hydration. The classic for sunburned or reactive skin.

    Good for: Anti-inflammatory, Hydrating

  • Alpha ArbutinModerate evidenceFull dossier ↗

    A safer, slower-acting alternative to prescription-strength dark-spot faders. Built for long-term use without irritation.

    Good for: Brightening

  • BisabololModerate evidenceFull dossier ↗

    The "calm-down" molecule in many sensitive-skin formulas. Reduces redness and stinging without bleaching your barrier, and plays nicely on top of retinoids or exfoliating acids.

    Good for: Anti-inflammatory

  • CalendulaModerate evidenceFull dossier ↗

    A botanical with real clinical wins for irritated, post-procedure, or recovering skin, with randomized-trial support behind its soothing reputation. Gentle enough for delicate, easily reactive skin and dry, sensitive patches.

    Good for: Anti-inflammatory

  • CeramidesStrong evidenceFull dossier ↗

    Refills the natural barrier between your skin cells. Locks moisture in, keeps irritants out, calms dry or damaged skin.

    Good for: Barrier repair

  • GlycerinModerate evidenceFull dossier ↗

    A workhorse hydrator that pulls water into your skin. In nearly every good moisturizer for a reason.

    Good for: Hydrating

  • Hyaluronic AcidStrong evidenceFull dossier ↗

    A pure hydrator that holds water in your skin. Makes skin look plumper and smoother almost immediately.

    Good for: Hydrating

  • NiacinamideStrong evidenceFull dossier ↗

    A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.

    Good for: Brightening, Barrier repair, Anti-inflammatory

  • SqualaneAnecdotal evidenceFull dossier ↗

    A lightweight oil that mimics what your skin already makes. Softens and seals in hydration without feeling greasy.

    Good for: Barrier repair, Hydrating

Evidence behind the ingredients

Real citations from our research database, one per tracked active in this product. Click any ingredient name to read its full evidence dossier.

AdenosineModerate evidence6 citations

A Korean-approved anti-wrinkle ingredient that encourages collagen production for a smoother, firmer look.

Yang HJ et al., Two-phase delivery using a horse oil and adenosine-loaded dissolving microneedle patch for skin barrier restoration, moisturization, and wrinkle improvement, Journal of Cosmetic Dermatology 2019;18(3):936-943 — Korean clinical study (n=20): adenosine microneedle patches improved elasticity, hydration, dermal density, wrinkles

2019Positive (efficacy)PMID:30160014View source ↗

Kang G et al., Adenosine-loaded dissolving microneedle patches to improve skin wrinkles, dermal density, elasticity and hydration, International Journal of Cosmetic Science 2018;40(2):199-206 — Korean-authored; adenosine microneedle patches matched or exceeded adenosine cream for multiple endpoints

2018Positive (efficacy)PMID:29574973View source ↗

Kim MY et al., Effect of adenosine on melanogenesis in B16 cells and zebrafish, Annals of Dermatology 2014;26(2):209-13 — adenosine suppresses pigmentation via negative regulation of tyrosinase in cellular and zebrafish models

2014Mechanism onlyPMID:24882976View source ↗
Aloe VeraModerate evidence7 citations

Calms irritation and adds light hydration. The classic for sunburned or reactive skin.

Huang YN et al., Effects of Aloe vera on Burn Injuries: A Systematic Review and Meta-Analysis of Randomized Controlled Trials, Journal of Burn Care & Research 2024;45(6):1536-1545 — topical aloe vera reduced burn wound-healing time

2024Meta-analysis (positive)PMID:38605441View source ↗

Tungkasamit T et al., Reduction in severity of radiation-induced dermatitis in head and neck cancer patients treated with topical aloe vera gel: A randomized multicenter double-blind placebo-controlled trial, European Journal of Oncology Nursing 2022;59:102164 — aloe vera reduced severity of moderate-to-severe radiation dermatitis

2022Positive (efficacy)PMID:35767935View source ↗

Sharma S et al., Second-Degree Burns and Aloe Vera: A Meta-analysis and Systematic Review, Advances in Skin & Wound Care 2022;35(11):1-9 — topical aloe vera shortened time to healing for second-degree burns

2022Meta-analysis (positive)PMID:36264753View source ↗
Alpha ArbutinModerate evidence5 citations

A safer, slower-acting alternative to prescription-strength dark-spot faders. Built for long-term use without irritation.

Ma ZY, Lu Y, Melanin synthesis and regulation in vivo and commonly used melanin inhibitors from natural products and traditional Chinese medicine, Zhongguo Zhong Yao Za Zhi (China Journal of Chinese Materia Medica) 2020;45(24):5898-5916 — Beijing University of Chinese Medicine review classifies arbutin among tyrosinase-active-site-targeting melanin inhibitors

2020Mechanism onlyPMID:33496130View source ↗

Morag M et al., A double-blind, placebo-controlled randomized trial of Serratulae quinquefoliae folium, a new source of β-arbutin, in selected skin hyperpigmentations, Journal of Cosmetic Dermatology 2015 — 76% of melasma patients showed clinical lightening over 8 weeks

2015Positive (efficacy)PMID:26119285View source ↗

Kim H, Choi HR, Kim DS, Park KC, Topical hypopigmenting agents for pigmentary disorders and their mechanisms of action, Annals of Dermatology 2012;24(1):1-6 — review classifies arbutin among hypopigmenting agents via tyrosinase regulation as a hydroquinone alternative

2012Mechanism onlyPMID:22363147View source ↗
+7 more ingredients
BisabololModerate evidence6 citations

The "calm-down" molecule in many sensitive-skin formulas. Reduces redness and stinging without bleaching your barrier, and plays nicely on top of retinoids or exfoliating acids.

Wu Y et al., Exploring the mechanism of alpha-Bisabolol in the treatment of psoriasis based on network pharmacology and experimental validation, European Journal of Pharmacology 2025 — alpha-bisabolol suppressed inflammation in TNF-alpha-treated keratinocytes and psoriasis mice via PI3K/AKT and NF-kB pathways; reduced IL-6, IL-1beta, TNF-alpha and skin lesions

2025Mechanism onlyPMID:40089261View source ↗

Karami H et al. (Brazil), Development of a hydrogel containing bisabolol-loaded nanocapsules for the treatment of atopic dermatitis in a Balb/c mice model, International Journal of Pharmaceutics 2024

2024Positive (efficacy)PMID:38527566View source ↗

Tan C et al. (Brazil), The combination of allantoin, bisabolol, D-panthenol and dipotassium glycyrrhizinate mitigates UVB-induced PGE2 synthesis by keratinocytes, International Journal of Cosmetic Science 2024

2024Mechanism onlyPMID:38433250View source ↗
CalendulaModerate evidence6 citations

A botanical with real clinical wins for irritated, post-procedure, or recovering skin, with randomized-trial support behind its soothing reputation. Gentle enough for delicate, easily reactive skin and dry, sensitive patches.

Deligiannidou GE et al. (Greece), An Update of Phytotherapeutic Advances of Marigold (Calendula officinalis L.) in Wound Healing, Plants (Basel) 2025 — peer-reviewed review of 2020-2025 experimental and clinical evidence on Calendula formulations for skin regeneration: healing rate, cell proliferation, inflammatory modulation

2025Meta-analysis (positive)PMID:41304647View source ↗

Effect of oral Calendula officinalis on second-degree burn wound healing (Iran), Scars Burns and Healing 2023

2023Positive (efficacy)PMID:36632430View source ↗

Siddiquee S et al., Efficacy of topical Calendula officinalis on prevalence of radiation-induced dermatitis: A randomised controlled trial, Australasian Journal of Dermatology 2021;62(1):e35-e40 — topical calendula reduced radiation-induced dermatitis

2021Positive (efficacy)PMID:32965030View source ↗
CeramidesStrong evidence7 citations

Refills the natural barrier between your skin cells. Locks moisture in, keeps irritants out, calms dry or damaged skin.

Andrew PV et al., Topical supplementation with physiological lipids rebalances the stratum corneum ceramide profile and strengthens skin barrier function in adults predisposed to atopic dermatitis, British Journal of Dermatology 2025;193(4):729-740 — physiological-lipid emulsion raised SC ceramide NP/AP and improved barrier function vs control

2025Positive (efficacy)PMID:40408261View source ↗

Nugroho WT, Sawitri, Astindari, Utomo B, Listiawan MY, Ervianti E, Astari L. The Efficacy of Moisturisers Containing Ceramide Compared with Other Moisturisers in the Management of Atopic Dermatitis: A Systematic Literature Review and Meta-Analysis. Indian J Dermatol. 2023;68(1):53-58. — Meta-analysis of 5 studies found ceramide-containing moisturisers produced significantly greater improvement in SCORAD compared with non-ceramide moisturisers in atopic dermatitis.

2023Meta-analysis (positive)PMID:37151263View source ↗

Shindo S et al., Effects of a moisturizer containing pseudo-ceramide and a eucalyptus extract on sweating function in adult atopic dermatitis: a double-blind, randomized, controlled left-right comparison clinical trial, Journal of Cosmetic Dermatology 2022;21(10):4503-4509 — pseudo-ceramide + eucalyptus moisturizer restored sweating function and barrier in AD adults

2022Positive (efficacy)PMID:35298858View source ↗
GlycerinModerate evidence6 citations

A workhorse hydrator that pulls water into your skin. In nearly every good moisturizer for a reason.

Danby SG et al., Different types of emollient cream exhibit diverse physiological effects on the skin barrier in adults with atopic dermatitis, Clinical and Experimental Dermatology 2022;47(6):1154-1164 — glycerol+urea emollient delivered superior barrier-strengthening and irritant protection

2022Positive (efficacy)PMID:35167133View source ↗

Youssef R et al., Glycerol 85% efficacy on atopic skin and its microbiome: a randomized controlled trial, Journal of Dermatological Treatment 2021;32(7):730-736 — topical glycerol 85% RCT on atopic skin

2021Positive (efficacy)PMID:31869257View source ↗

Evans NJ et al., Human axillary skin condition is improved following incorporation of glycerol into the stratum corneum from an antiperspirant formulation, Archives of Dermatological Research 2017;309(9):739-748 — 4% glycerol penetrated axillary SC, reduced irritation, improved hydration

2017Positive (efficacy)PMID:28889318View source ↗
Hyaluronic AcidStrong evidence7 citations

A pure hydrator that holds water in your skin. Makes skin look plumper and smoother almost immediately.

Karabat MU, Tuncer MC. Effects of hyaluronic acid on skin at the cellular level: a systematic review. Rev Assoc Med Bras. 2025;71(8):e20250208. — Systematic review of 45 studies found low-molecular-weight HA stimulates keratinocyte proliferation and migration while high-molecular-weight HA drives skin hydration, supporting topical HA as an effective skin-hydrating and barrier-supporting ingredient.

2025Meta-analysis (positive)PMID:40990743View source ↗

Bravo B et al., Benefits of topical hyaluronic acid for skin quality and signs of skin aging: From literature review to clinical evidence, Dermatology and Therapy 2022;12(12):2657-2680 — HA-based cosmeceuticals reliably improve hydration and signs of skin aging

2022Meta-analysis (positive)PMID:36200921View source ↗

Lee SG et al., Hyaluronan Oligosaccharides Improve Rosacea-Like Phenotype through Anti-Inflammatory and Epidermal Barrier-Improving Effects, Annals of Dermatology 2020

2020Mechanism onlyPMID:33911737View source ↗
NiacinamideStrong evidence10 citations

A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.

Moro F et al., Skin Cancer Prevention and Antiaging: Role of Nicotinamide, International Journal of Molecular Sciences 2026

2026Mechanism onlyPMID:42278444View source ↗

Passeron T et al., An Investigator-Blinded, Randomized Trial of a Broad-Spectrum Sunscreen Containing Sclareolide and Niacinamide, Dermatology and Therapy (Heidelberg) 2026

2026Positive (efficacy)PMID:41240206View source ↗

Vergilio MM et al., Topical Formulation with Niacinamide Combined with 5 MHz Ultrasound for Improving Skin Ageing, Current Medicinal Chemistry 2025

2025Positive (efficacy)PMID:39171587View source ↗
SqualaneAnecdotal evidence5 citations

A lightweight oil that mimics what your skin already makes. Softens and seals in hydration without feeling greasy.

Wolosik K et al., Squalane as a Promising Agent Protecting UV-Induced Inhibition of Collagen Biosynthesis and Wound Healing in Human Dermal Fibroblast, Molecules 2025;30(9):1964 — low-dose squalane (0.005-0.015%) restored collagen biosynthesis and wound healing in UVA-exposed human dermal fibroblasts

2025Mechanism onlyPMID:40363772View source ↗

Morgan AB et al., Explicating the multifunctional roles of tocotrienol and squalene in promoting skin health, Skin Health and Disease 2024;4(5):e448 — squalene/squalane promotes skin health via antioxidant, hydrating, emollient, anti-inflammatory mechanisms

2024Mechanism onlyPMID:39355739View source ↗

Fiume M et al., Safety Assessment of Squalane and Squalene as Used in Cosmetics, International Journal of Toxicology 2023;42(3_suppl):107S-109S — CIR expert-panel assessment concluding squalane is safe as a cosmetic ingredient

2023Safety assessmentPMID:37752766View source ↗

Sources: 10 clinical journals and regulatory databases across the US, EU, Korea, Japan, and China. Every entry points to a specific document. See methodology for the full list and what each outcome label means.

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