RHODOPHYCEAE HYDRATION MOISTURISER
A daily rhodophyceae moisturiser with no added fragrance for dry, sensitive skin. Red algae oligosaccharides and multi-weight hyaluronic acid bind water at the skin surface, while wild mango kernel butter comforts and conditions.
Backed by published research · references belowArrives in 4 to 7 business days in the US, 6 to 9 in the UK and up to 8 in France. UK orders may owe customs fees on delivery. This item ships free, as does every order of $100 or more. Read the returns policy
Formulated for Dry Skin and Sensitive Skin.
- Hydrolyzed Rhodophyceae (Red Algae) Extract, an oligosaccharide humectant, binds water at the stratum corneum surface and forms a brief hygroscopic film during the wear window1.
- Multi-Weight Hyaluronic Acid, pairing Hydrolyzed Hyaluronic Acid with Sodium Hyaluronate, a glycosaminoglycan with a unique capacity to bind and retain water molecules2.
- Irvingia Gabonensis (Wild Mango) Kernel Butter, a plant-derived lipid emollient, comforts and conditions.
Hero mechanism: Hydrolyzed Rhodophyceae (Red Algae) Extract, an oligosaccharide humectant, supplies carrageenan-derived oligogalactans and 3,6-anhydro-L-galactose that bind water at the stratum corneum surface. Full mechanism and citations under Details and references.
A 50 ml / 1.69 fl oz daily moisturiser with no added fragrance, built on three actives: Hydrolyzed Rhodophyceae (Red Algae) Extract, Irvingia Gabonensis (Wild Mango) Kernel Butter, and Multi-Weight Hyaluronic Acid, over an Aloe Barbadensis Leaf Juice base with a Jojoba Seed Oil emollient layer. 100% natural origin, 22% organic origin, vegan eligible.
Hydrolyzed Rhodophyceae (Red Algae) Extract, Irvingia Gabonensis (Wild Mango) Kernel Butter, Multi-Weight Hydrolyzed Hyaluronic Acid + Sodium Hyaluronate.
Active ingredients:
- Hydrolyzed Rhodophyceae (Red Algae) Extract, an oligosaccharide humectant
- Multi-Weight Hyaluronic Acid, a glycosaminoglycan humectant
- Irvingia Gabonensis (Wild Mango) Kernel Butter, a plant-derived lipid emollient
Aloe Barbadensis (Aloe) Leaf Juice, Glycerin, Simmondsia Chinensis (Jojoba) Seed Oil, Pentylene Glycol, Polyglyceryl-3 Stearate, Cetearyl Alcohol, Sodium PCA, Coco-Caprylate, Isoamyl Laurate, Caprylic/Capric Triglyceride, Aqua/Water, Hydrolyzed Rhodophyceae Extract, Octyldodecanol, Xanthan Gum, Cellulose, Irvingia Gabonensis Kernel Butter, Potassium Hydroxide, Sodium Hyaluronate, Hydrogenated Coco-Glycerides, Tocopherol, Ascorbyl Palmitate, Sodium Phytate, Hydrolyzed Hyaluronic Acid
The ingredient list printed on your product’s packaging is always definitive; where it differs from this page, the packaging prevails.
- Apply a small amount to clean skin morning and evening, after cleansing and any serum step.
- Massage gently into the face and neck. Suitable as a daily moisturiser for reactive, dry, and sensitive skin.
- The lightweight emollient base sits comfortably under sunscreen.
Are there any side effects?
Patch test on the inner forearm for 24 hours before facial use. Avoid contact with eyes.
What does red algae do for you?
Hydrolyzed Rhodophyceae, a red-algae extract, is studied in cosmetics for supporting the skin's own hyaluronic acid and moisture retention, helping this fragrance-free moisturiser calm the look of reactive, dehydrated skin.
How do I use it?
Apply a small amount to clean skin morning and evening, after cleansing and any serum step. Massage gently into the face and neck.
What is hyaluronic acid good for?
Hyaluronic acid is good for skin moisture. A 2012 paper calls it the key molecule involved, with a unique capacity to retain water, and notes that youthful skin keeps its resilience thanks to a high water content (Papakonstantinou 2012). In this moisturiser it works as a humectant in two forms, Sodium Hyaluronate and Hydrolyzed Hyaluronic Acid, alongside Glycerin and Sodium PCA.
100% natural origin, 22% organic origin, vegan eligible. No added fragrance. No Parfum or fragrance ingredients are listed in the full ingredient list. Patch test on the inner forearm for 24 hours before facial use. Avoid contact with eyes.
Hydrolyzed Rhodophyceae (Red Algae) Extract is derived from red macroalgae via enzymatic or mild acid hydrolysis. The hydrolysed form supplies oligosaccharide fragments (carrageenan-derived oligogalactans and 3,6-anhydro-L-galactose) that bind water at the stratum corneum surface and form a brief hygroscopic film during the wear window. Kappa-carrageenan tetrasaccharide supports stratum corneum hydration and transepidermal water loss balance in keratinocyte models1. 3,6-anhydro-L-galactose supports endogenous hyaluronic acid synthesis in HaCaT keratinocytes3. Multi-Weight Hyaluronic Acid is a glycosaminoglycan naturally present in skin, with a unique capacity to bind and retain water molecules2. Clinical evidence on emollient and humectant moisturisers in dry and barrier-compromised skin is summarised in a review of basic emollients4.
- Zhu C, Hong T, Li H, et al. κ-Carrageenan tetrasaccharide ameliorates particulate matter-induced defects in skin hydration of human keratinocytes cells and skin barrier disorders. Int J Biol Macromol. 2025;301:140395. DOI 10.1016/j.ijbiomac.2025.140395. PubMed PMID 39880261.
- Papakonstantinou E, Roth M, Karakiulakis G. Hyaluronic acid: A key molecule in skin aging. Dermato-Endocrinology. 2012;4(3):253-258. DOI 10.4161/derm.21923.
- Lee JE, Kim YA, Yu S, et al. 3,6-Anhydro-L-galactose increases hyaluronic acid production via the EGFR and AMPKα signaling pathway in HaCaT keratinocytes. J Dermatol Sci. 2019;96(2):90-98. DOI 10.1016/j.jdermsci.2019.10.005. PubMed PMID 31718895.
- Wollenberg A, Barbarot S, Torrelo A. Basic Emollients for Xerosis Cutis in Atopic Dermatitis: A Review of Clinical Studies. International Journal of Dermatology. 2025;64 Suppl 1:13-28. DOI 10.1111/ijd.17793. PubMed PMID 40265493.
How to cite this product page: Opuliss. Rhodophyceae Hydration Moisturiser. Opuliss Skin product page. 2026. https://opuliss.com/products/sensitive-skin-moisturiser-fragrance-free
The Science
Hydrolyzed Rhodophyceae, a red-algae extract, is studied in cosmetics for supporting the skin's own hyaluronic acid and moisture retention, helping this fragrance-free moisturiser calm the look of reactive, dehydrated skin.
Source: Lee JE, et al. Journal of Dermatological Science, 2019 (PMID 31718895).
INSIDE THE SCIENCE
From precision-fermented actives to biomimetic complexes, discover what makes it Opuliss.
RED ALGAE
Red algae extract that hydrates and helps calm reactive skin.
Source: Lee JE, et al. Journal of Dermatological Science, 2019 (PMID 31718895).
WILD MANGO BUTTER
Rich African mango butter that deeply nourishes and softens dry skin.
Source: EU CosIng listed function.
MULTI-WEIGHT HYALURONIC ACID
Known for its strong water-binding potential. In a 60-day study, hyaluronic acid creams improved skin elasticity compared with a placebo cream.
Source: Pavicic T, et al. Journal of Drugs in Dermatology, 2011 (PMID 22052267).
HOW TO USE
Apply a small amount to clean skin morning and evening, after cleansing and any serum step.
Massage gently into the face and neck. Suitable as a daily moisturiser for reactive, dry, and sensitive skin.
The lightweight emollient base sits comfortably under sunscreen.
THE TEXTURE
The Opuliss difference
SCIENCE, MADE VISIBLE
Opuliss begins where the research ends. Every active is named, every claim is traceable, and nothing is left to promise alone.
Morning to night
A RITUAL, CONSIDERED
Each formula stands on its own and belongs to the whole. Layered with intention, morning and night, the routine becomes unmistakably yours.
A twenty four hour rhythm
THE SKIN KEEPS TIME
Skin is not the same at midnight as it is at nine in the morning. Across a single day its temperature, its acidity and the moisture it loses to the air each move on a rhythm of their own. Morning and night are not two routines. They are one, kept in time.
Yosipovitch G et al. Journal of Investigative Dermatology, 1998 (PMID 9424081). Sixteen volunteers sampled every two hours across a twenty four hour span.
