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L4B Concentrated Pigmentation Fade Serum


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.





2 peptides designed to fade pigmentation, one whose activity is boosted by Sodium Ascorbyl Phosphate (included at max percentage).

One peptide designed to help boost skin cell turnover.

Hops extract, works similarly to licorice.

Turmeric extract, another botanical lightening agent.

Synergistic combo of N-Acetyl Glucosamine (NON VEGAN) and Niacinamide for further fading.

Expect to see results in 4-8 weeks of faithful use.

Concentrated, multi-mechanism pigmentation fading serum.

For best results, avoid sun exposure and/or use sunscreen. Lymphatic drainage massage has also been shown to help move pigmentation out, and will boost the effects of this serum.



Calendula Hydrosol, Tetrapeptide-30, Glycerin, Water, Lactobacillus Ferment Lysate Filtrate, N-Acetyl Glucosamine, Sodium Ascorbyl Phosphate, Niacinamide, Shea Glycerides, Turmeric Extract, Hops Extract, Disodium Phosphate, Acetyl Hexapeptide-8, Sodium Phosphate, Caprylyl Glycol, Caprylhydroxamic Acid, Glyceryl Caprylate, Dehydroxanthan Gum, Frankincense Oil, Rose Absolute


Apply to clean skin at least once per day. Apply first, before any other serums, including exfoliating ones.

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