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L4B Iridescent Perfect + Rescue Concentrate


or 4 installments from $18.75 by Afterpay More info

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)




Perfect + Rescue Concentrate is designed to heal blemishes in the healthiest, least drying, least irritating way possible.

It is essential oil free, alcohol free, benzoyl peroxide free, salicylic acid free, AHA free.

It combines powerful anti-inflammatories and antioxidants to rapidly reduce the swelling, redness, pain and stagnation associated with blemishes.

After the blemish is contained, it accelerates the healing of any visible scarring such as bumps, texture, and post-inflammatory hyperpigmentation.

In addition to working as a powerful spot treatment, it also provides broad support in these areas:

~Pollution, free radical and blue light protection.

~Antioxidant + anti-inflammatory

~12% Vitamin C (THA)

~Lipid moisture

~Fades pigmentation

~Reduces redness


  1. SPOT TREATMENT (dab on spots up to 6x per day)
  2. SLEEP MASK (use overnight instead of your usual moisturizer)
  3. BOOSTER (cocktail 1-4 drops with a serum or moisturizer)


Batch 1: Cannabis Sativa Seed Oil, Tetrahecyldecyl Ascorbate, Zinc Oxide, Daucus Carota Sativa Seed Oil, Pentaclethra Macroloba Seed Oil, Dicaprylyl Carbonate, Carapa Guianensis Seed Oil, Isoamyl Laurate, Hydnocarpus Wightiana Seed Oil, Octyldodecanol, Bisabolol, Bakuchiol, Nigella Sativa Seed Oil, Rosmarinus Officinalis Leaf Extract, Pino Acetaldehyde


It is a bi-phase product, meaning you have to shake well before applying and empty and refill the pipette after shaking.

3 ways to use:

  1. SPOT TREATMENT (Dab on spots up to 6x per day. Using it overnight is especially important as that is when skin healing processes occur in the body.)
  2. SLEEP MASK (Use overnight instead of your usual moisturizer – skin will look perfected and rescued upon waking.)
  3. BOOSTER (Cocktail 1-4 drops with a serum or moisturizer or oil or balm. Use am or pm or both.)
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