Hudsalva
- Routine step
- Moisturizer
- When
- Morning and evening
- Pairs well with
- Tretinoin, Retinaldehyde, Niacinamide, Azelaic Acid
- Use with care
- 2 layering conflicts, listed below
Apply as the last step in the evening, and before sunscreen in the morning. A fingertip-sized amount covers the face.
This product contains an active that can irritate at first. Patch test on the inner forearm for 24 hours and start two or three times a week.
Ingredient research in this formula
These are ingredient-level research links, not evidence that this exact product has been clinically tested.
A wax film former that quietly does what petrolatum does (slows water loss and shields chapped skin) without feeling slick. Most evidence comes from honey/beeswax/olive-oil cerates that have shown improvement in dry, irritation-prone skin in controlled trials. CIR-affirmed safe.
Good for: Barrier repair, Hydrating
A fruit-derived AHA that exfoliates and antioxidizes. It shares the same basic mechanism as glycolic and lactic acid but is weaker gram-for-gram; in practice you'll see it doing dual duty (a little exfoliation plus pH stabilisation) in multi-acid toners and serums. When it appears low on an ingredient list, it's adjusting pH; higher up, it's contributing real exfoliation.
Good for: Exfoliating, Antioxidant
Brightens dull skin and helps fade dark spots. Also defends against everyday UV and pollution damage when worn under sunscreen.
Good for: Brightening, Antioxidant
A workhorse antioxidant that defends your skin from daily oxidative damage. Pairs especially well with vitamin C, and it's in nearly every good moisturizer for a reason.
Good for: Antioxidant
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 wax film former that quietly does what petrolatum does (slows water loss and shields chapped skin) without feeling slick. Most evidence comes from honey/beeswax/olive-oil cerates that have shown improvement in dry, irritation-prone skin in controlled trials. CIR-affirmed safe.
Souza C et al., Topical Formulation Containing Beeswax-Based Nanoparticles Improved In Vivo Skin Barrier Function, AAPS PharmSciTech 2017;18(7):2505-2516: controlled: beeswax-based nanoparticle topical formulation
Al-Waili NS. Clinical and mycological benefits of topical application of honey, olive oil and beeswax in diaper dermatitis. Clin Microbiol Infect. 2005;11(2):160-163.
CIR Expert Panel. Safety Assessment of Beeswax, Candelilla Wax, Carnauba Wax, Japan Wax, and Beeswax-Derived Ingredients. Int J Toxicol. (Reaffirmed 2005.)
A fruit-derived AHA that exfoliates and antioxidizes. It shares the same basic mechanism as glycolic and lactic acid but is weaker gram-for-gram; in practice you'll see it doing dual duty (a little exfoliation plus pH stabilisation) in multi-acid toners and serums. When it appears low on an ingredient list, it's adjusting pH; higher up, it's contributing real exfoliation.
Tang SC, Yang JH. Dual Effects of Alpha-Hydroxy Acids on the Skin. Molecules. 2018;23(4):863.
Yamamoto Y, Uede K, Yonei N, Kishioka A, Ohtani T, Furukawa F. Effects of alpha-hydroxy acids on the human skin of Japanese subjects: the rationale for chemical peeling. Journal of Dermatology. 2006 Jan;33(1):16-22. Clinical-mechanistic study in Japanese subjects demonstrating AHA (including citric acid class) keratolytic and epidermal renewal effects as rationale for chemical peeling.
Bernstein EF, Underhill CB, Lakkakorpi J, et al. Citric acid increases viable epidermal thickness and glycosaminoglycan content of sun-damaged skin. Dermatologic Surgery. 1997 Aug;23(8):689-694. Mechanistic study showing topical citric acid increased viable epidermal thickness and dermal glycosaminoglycans in sun-damaged skin, similar to glycolic acid and retinoic acid.
Brightens dull skin and helps fade dark spots. Also defends against everyday UV and pollution damage when worn under sunscreen.
Krutmann J et al. PINGing Sunshine: A Review of the Evidence for Adding Non-Filtering Photoprotective Ingredients to Sunscreens. Photodermatol Photoimmunol Photomed. 2025;41(6). Review of Photoprotective INGredients (PINGs); L-ascorbic acid (vitamin C) identified as a top-ranked PING demonstrating efficacy across multiple photodamage endpoints.
Pullar JM et al., The roles of vitamin C in skin health, Nutrients 2017;9(8):866: concluded topical efficacy "poorly understood"; supports dietary vitamin C
Lee JH et al., Effects of VitabridC12 on Skin Inflammation, Annals of Dermatology 2017
+−1 more ingredient
A workhorse antioxidant that defends your skin from daily oxidative damage. Pairs especially well with vitamin C, and it's in nearly every good moisturizer for a reason.
Neves JR et al., Efficacy of a topical serum containing L-ascorbic acid, neohesperidin, pycnogenol, tocopherol, and hyaluronic acid in relation to skin aging signs, Journal of Cosmetic Dermatology 2022;21(10):4462-4469: tocopherol-containing antioxidant serum reduced pollution-induced damage and improved aging signs
Warshaw EM et al., Patch Testing With Tocopherol and Tocopherol Acetate: The North American Contact Dermatitis Group Experience, 2001 to 2016, Dermatitis 2021;32(5):308-318: 15-year NACDG data: positive patch-test reactions to tocopherol rare given widespread cosmetic use
Lin FH et al., Ferulic acid stabilizes a solution of vitamins C and E and doubles its photoprotection of skin, Journal of Investigative Dermatology 2005;125(4):826-832: ferulic acid + vit C + vit E combo doubled photoprotection vs C+E alone (cross-listed; same paper cited for Ferulic Acid and Vit C)
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.
Layering conflicts
Ingredients in this product that can react with common actives. Avoid stacking unless noted.
- Benzoyl Peroxidemedium
Benzoyl peroxide breaks down vitamin C, making both less effective. Use one in the morning and the other at night.
- Retinollow
Vitamin C and retinol work best at different pH levels. Use vitamin C in the morning and retinol at night.
Similar comparisons
Not medical advice. GlowPal is educational. Patch-test new products and talk to a qualified healthcare professional before changing your routine, especially if you're pregnant, nursing, or have a diagnosed skin condition. See our terms.