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L4B Soothing Hydroserum


What is the L4B?

moss founder Celestyna created the L4B as a place to fulfill her curiosity and creativity. New ingredients, formulations, and techniques are tested, including ultra powerful and specific products Celestyna creates for her seasonal needs. Some of these exceptional creations we make available for you as couture experimental skincare – extremely limited quantity and always expertly hand-crafted by the proprietress herself.

At the end of the year we consult all of our L4B participants and consider adding a favorite L4B formulation to the permanent moss collection.

Please note, due to the foundational concept of the lab, each batch will vary slightly – it may have slightly different ingredients and different percentages of ingredients. The L4B is NOT a conventional, static skincare line – it is a formulator’s playground.

(All sales final.)




With the same ingredients the Soothing Overnight Sleeping Pack has but with a lighter, disappears-into-skin,  day-wear texture.

~ With B vitamin allstars, panthenol and niacinamide. These vitamins help increase skin moisture content and ceramide production.

~ Bisabolol is a soothing compound naturally found in plants

~ A redness reducing peptide

~ An extract from microalgae that contains high levels of glutathione, an antioxidant crucial to skin health

~ gotu kola (collagen boosting)

~ plantain (ultra soothing)

~ wild green oat (high in moisturizing and soothing beta glucans)

~ Mayapple extract – a wildflower high in sirtuins, which are skin repair proteins

~ Milk Thistle – an extremely anti-inflammatory plant oil

~ Echium oil, a wild flower that is higher than even Borage oil in GLA, an anti-inflammatory fatty acid

~ Helichrysum hydrosol creates the base for this lovely emulsion

20ml size


Batch 1, Batch 2:Helichrysum Hydrosol, Niacinamide, Panthenol, Crypthecodinium Cohnii Extract, Milk Thistle Oil, Echium Oil, Bisabolol, Acetyl Tetrapeptide-40, Caprylyl Glycol, Ammonium Acryloyldimethyltaurate/VP Copolymer, Helianthus Annuus (Sunflower) Seed Oil & Saccharomyces/Podophyllum Peltatum Ferment Filtrate, Caprylhydroxamic Acid, Glyceryl Caprylate, Gotu Kola Extract, Oat Extract, Plantain Extract


Apply to clean skin. Lovely layered over or micro-emulsified with Porcelain Water Balm.

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