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L4B Lumi Phytosolar Priming Oil


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)




Last year, we introduced a limited edition facial oil perfect for blending with Halo.

It was designed to maximize the even dispersion of the powder and give additional blurring/priming benefits along with being very antioxidant heavy to counteract sun damage.

This year, we are offering Lumi through the L4B. It remains very similar to last year’s formula, just certain oils have changed to reflect our “jungle mermaid” inspiration. It has a very light touch of EOs, about one fourth of what we would normally use in a facial oil.

We are using all high linoleic gorgeous unrefined tropical oils:

Guava seed – extremely high in Vit C

Passionfruit – very lightweight with a gorgeous earthy tropical scent

Echium blossom – super high in GLA (gamma linolenic acid) which is very anti-inflammatory

Carrot seed – ultra reparative and protective

Vitamin C – oil soluble stable vitamin C concentrate

The essential oils are Palmarosa and Bee Blossom.

Suitable for blending with moss Halo Photoprotective Soothing Essence Powder. 


20ml size


Batch 1 (less viscous): Safflower Oil, Guava Oil, Maracuja Oil, Echium Oil, Carrot Seed Oil, Ethylhexyl Olivate, Brassica Alcohol, Tetrahexyldecyl Ascorbate, Silica, Mica, Palmarosa Oil, Monarda Oil, Rosemary Antioxidant

Batch 2 (more viscous): Safflower Oil, Guava Oil, Maracuja Oil, Echium Oil, Carrot Seed Oil, Ethylhexyl Olivate, Brassica Glycerides, Tetrahexyldecyl Ascorbate, Silica, Mica, Palmarosa Oil, Monarda Oil, Rosemary Antioxidant


Apply as you would a facial oil, sparingly over clean skin. If mixing with Halo, use 2-3 pumps to one scoop.

Shake well before dispensing. Pictured below is batch 1. Batch 2 image in gallery.
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