No.9 NAD+ PDRN Glow Boosting Toner
What it's good for
Key actives from our research database. Click any to read the full evidence 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
Refills the natural barrier between your skin cells. Locks moisture in, keeps irritants out, calms dry or damaged skin.
Good for: Barrier repair
Signals your skin to make more collagen. Quiet but real support for firmness and fine lines with consistent daily use.
Good for: Anti-aging
A Korean-approved anti-wrinkle ingredient that encourages collagen production for a smoother, firmer look.
Good for: Anti-aging
A workhorse hydrator that pulls water into your skin. In nearly every good moisturizer for a reason.
Good for: Hydrating
Calms irritation and adds light hydration. The classic for sunburned or reactive skin.
Good for: Anti-inflammatory, Hydrating
A signal peptide that tells your skin to make more collagen and elastin. Quiet but consistent firmness support over months of daily use.
Good for: Anti-aging
A "master antioxidant" your body already makes. In skincare it gently lightens overall tone and helps fade pigmentation when used consistently over months.
Good for: Brightening, Antioxidant
A grape-derived antioxidant that defends skin from daily oxidative damage and helps even out tone. Often paired with vitamins C and E in nighttime serums.
Good for: Antioxidant, Anti-aging, Brightening
Sometimes called "topical Botox," it's a peptide that subtly reduces the depth of expression lines around the eyes and forehead when used daily over months. Mild effect, but real.
Good for: Anti-aging
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.
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
Passeron T et al., An Investigator-Blinded, Randomized Trial of a Broad-Spectrum Sunscreen Containing Sclareolide and Niacinamide, Dermatology and Therapy (Heidelberg) 2026
Vergilio MM et al., Topical Formulation with Niacinamide Combined with 5 MHz Ultrasound for Improving Skin Ageing, Current Medicinal Chemistry 2025
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
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.
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
Signals your skin to make more collagen. Quiet but real support for firmness and fine lines with consistent daily use.
Yang Y et al., Comprehensive evaluation of the efficacy and safety of a new multi-component anti-aging topical eye cream, Skin Research and Technology 2024;30(7):e13790 — 12-week study of active complex containing Matrixyl 3000 peptides showed significant improvement in hydration, elasticity, periorbital wrinkles
Aruan RR et al., Double-blind, Randomized Trial on the Effectiveness of Acetylhexapeptide-3 Cream and Palmitoyl Pentapeptide-4 Cream for Crow's Feet, Journal of Clinical and Aesthetic Dermatology 2023;16(2):37-43 — RCT of topical palmitoyl pentapeptide-4 (Matrixyl) for periorbital wrinkles
Imhof L, Leuthard D, Topical Over-the-Counter Antiaging Agents: An Update and Systematic Review, Dermatology 2021;237(2):217-229 — SR covering topical antiaging peptides
+−7 more ingredients
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
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
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
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
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
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
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
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
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
A signal peptide that tells your skin to make more collagen and elastin. Quiet but consistent firmness support over months of daily use.
Patel MN et al., An Assessment of the Safety, Efficacy, and Tolerability of a Novel Scalp Treatment Regimen Combining a Hydroxy Acid-Based Scrub and Copper Tripeptide Serum in the Management of Seborrheic Dermatitis in Adults, Cureus 2024;16(9):e70108 — 15-day interventional study: copper tripeptide regimen reduced flaking, improved hydration in seborrheic dermatitis
Jiang F et al., Synergy of GHK-Cu and hyaluronic acid on collagen IV upregulation via fibroblast and ex-vivo skin tests, Journal of Cosmetic Dermatology 2023;22(9):2598-2604 — in vitro + ex vivo: GHK-Cu + HA promoted collagen I, IV, and VII; 25.4-fold collagen IV increase in fibroblasts
Dou Y et al., The potential of GHK as an anti-aging peptide, Aging Pathobiology and Therapeutics 2020;2(1):58-61 — narrative review of GHK-Cu's anti-inflammatory and tissue-remodeling mechanisms
A "master antioxidant" your body already makes. In skincare it gently lightens overall tone and helps fade pigmentation when used consistently over months.
Stanescu C et al., Glutathione in Skin Aging and Tissue Regeneration: A Systematic Review of Molecular Mechanisms, Redox Modulation, and Biomedical Implications, Molecules 2026
Sarkar R et al., Glutathione as a skin-lightening agent and in melasma: a systematic review, International Journal of Dermatology 2025
Wahab S et al., Combination of topical and oral glutathione as a skin-whitening agent: a double-blind randomized controlled clinical trial, International Journal of Dermatology 2021;60(8):1013-1018 — 8-week RCT showed combination significantly lowered melanin and raised lightness vs placebo
A grape-derived antioxidant that defends skin from daily oxidative damage and helps even out tone. Often paired with vitamins C and E in nighttime serums.
Shi Y, Shen C, Zhang W, Efficacy and safety of a topical skincare regimen containing CE Ferulic serum and resveratrol BE serum following ablative fractional CO2 laser treatment, Journal of the European Academy of Dermatology and Venereology 2024;38 Suppl 6:18-25 — split-face RCT, resveratrol-containing serum reduced erythema and accelerated wound healing post-laser
Hecker A et al., The impact of resveratrol on skin wound healing, scarring, and aging, International Wound Journal 2022;19(1):9-28 — review of resveratrol's dermatological effects on wound healing, scarring, and photoaging
Lin MH et al., The bioactivities of resveratrol and its naturally occurring derivatives on skin, Journal of Food and Drug Analysis 2021;29(1):15-38 — review of cutaneous resveratrol activity in photoaging, melanogenesis, and dermatitis
Sometimes called "topical Botox," it's a peptide that subtly reduces the depth of expression lines around the eyes and forehead when used daily over months. Mild effect, but real.
Zhu M et al., The effect of a serum containing acetyl hexapeptide-8, dipeptide diaminobutyroyl benzylamide diacetate and gluconolactone on skin biomarkers, wrinkles and skin texture: ex vivo and clinical studies, International Journal of Cosmetic Science 2026 — two clinical trials (n=50, n=42) showed 35-69% static wrinkle improvement and significant elastic fiber and collagen biomarker increases at 12 weeks
Zdrada-Nowak J, Surgiel-Gemza A, Szatkowska M, Acetyl Hexapeptide-8 in Cosmeceuticals: A Review of Skin Permeability and Efficacy, International Journal of Molecular Sciences 2025
Henseler H, Investigating the effects of Argireline in a skin serum containing hyaluronic acids on skin surface wrinkles using the Visia Complexion Analysis camera system, GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW 2023;12:Doc09 — topical argireline serum reduced measured surface wrinkles
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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