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  • Ursa Major | Lunar Bloom Retinal Serum

    A light-as-air nighttime serum for your most youthful, luminous skin yet. 

    Powered by Retinal—a skin-supercharging vitamin A derivative—plus micronutrient-rich forest actives and night-blooming flowers. Lunar Bloom Retinal Serum is a potent yet gentle ritual for evening skin texture and smoothing the appearance of fine lines.

    Why It’s Special

    • What’s Retinal?

      Short for retinaldehyde, Retinal is a form of Vitamin A. It helps rewind the look of fine lines and wrinkles by promoting renewal and boosting collagen. 

    • Super potent, surprisingly gentle

      Retinal is 20x more potent than Retinol. That’s why we chose it! It’s super effective in small doses, which means our formula taps into its full superpowers without setting off your skin.

    • Leave fine lines behind

      Whether you’re looking to turn back the clock or get a head start, Retinal’s specialty is smoothing the appearance of fine lines and wrinkles.

    • Smooth things over

      Retinal plus micronutrient-rich plant actives work their magic each night, so you’ll notice improved skin texture and smaller-looking pores.


    Q: What is Retinal?

    A: Short for retinaldehyde, Retinal is one of the strongest forms of Vitamin A available without a prescription. It helps rewind the look of fine lines and wrinkles by promoting renewal and boosting collagen.

    Like Retinal’s widely-known “cousin”, Retinol, both derivatives need to go through a conversion process at the level of the skin to reach their active state: Retinoic acid. Traditional Retinol is 2 steps away from this conversion. Since Retinal needs only 1 step, it’s able to get to work more quickly, and your skin is able to use it more effectively.

    TLDR: We like to think of Retinal as Retinol’s hard-working, super-skin-renewing cousin that you’ve always wanted to hang out with (and now you can). 

    Q: How and when do I use this product? 

    A: As part of your nightly ritual, apply 1-2 pumps of Lunar Bloom Retinal Serum before your moisturizer of choice. Start out slowly (3 times a week) to allow your skin to acclimate, before building up to nightly use.

    Already loving the other Ursa Major serums in your routine? We suggest using Vitamin C in the morning and either layering Mountain Glow over Lunar Bloom at night, or alternating every- other-night between the two serums.

    Non-negotiable: pair this nighttime serum with a daytime SPF (we’re partial to our Force Field SPF 30), as retinoids can increase your skin’s sensitivity to the sun.

    Q: How do I work this product into my existing serum routine?

    A: One recommendation would be using Vitamin C in the morning and layering Mountain Glow over Lunar Bloom at night, or alternating every other night between the two serums.

    Q: Is it pregnancy safe?

    A: This product is not recommended for those who are pregnant, nursing, or attempting to conceive.

    Q: What skin type is this suitable for? 

    A: Lunar Bloom Retinal Serum works great for all skin types, even sensitive and acne-prone skin. This serum can keep both mature and young (and everywhere in between) skin glowing strong.

    Q: Is this safe for sensitive skin?

    A: We chose Retinal specifically because of its efficacy—it’s 20x more potent than Retinol! That means we only needed to use a tiny bit (0.1%) in our formula. A tiny amount of potent Retinal is much easier on your skin than a larger amount of traditional Retinol—because your skin can’t absorb all that Retinol, and what's not absorbed can sit on skin and potentially cause unwanted side effects. We also added barrier-loving ingredients like plant-derived Ceramides and Hyaluronic Acid. to soothe even the most sensitive skin types.

    No matter your skin type, but especially those with sensitive skin, begin using gradually (3 times a week) to allow your skin to adjust. And don’t forget daily SPF protection.

    If you’re worried about how extra-sensitive skin might react, you can build a Retinal sandwich—AKA applying a layer of moisturizer both before and after your serum—when starting out.

    Q: How do I recycle this product? 

    A: When you run out, just give the glass container a rinse and recycle it at home. Because the plastic pump is a mixed material, it can’t be recycled at this time.

    Q: What is the aroma?

    A: Lunar Bloom Retinal Serum is unscented.


    Use 1-2 pumps at night before you apply your favorite moisturizer. Start by using 3 times a week and build up to nightly use. Daily AM sunscreen use is recommended.

    Pure, Powerful Ingredients

    Formulated without petrochemicals, sulfates, parabens, synthetic fragrances, or other suspect chemicals.

    Retinal: A form of Vitamin A, Retinal helps rewind the look of fine lines and wrinkles by promoting renewal and boosting collagen

    Four O’Clock Flower Cells: A night-blooming flower that works to revive skin radiance

    Gardenia Stem Cells: Help rewind the look of fine lines and wrinkles by supporting collagen and elastin

    Round-headed Bush Clover Extract: Works to enhance skin tone by promoting nighttime renewal

    Plant-derived Ceramides: Help support the skin barrier while sealing in moisture

    Ginger Root Extract: Helps soothe skin and reduce the appearance of redness


    water/aqua/eau, propanediol, squalane, caprylic/capric triglyceride, glycerin, hydrogenated ethylhexyl olivate, simmondsia chinensis (jojoba) seed oil, oryza sativa (rice) bran oil, limnanthes alba (meadowfoam) seed oil, potassium cetyl phosphate, hydrolyzed hyaluronic acid, bisabolol, zingiber officinale (ginger) root extract, retinal, hydrogenated olive oil unsaponifiables, mirabilis jalapa callus extract, lespedeza capitata flower/leaf/stem extract, gardenia jasminoides meristem cell culture, crocus chrysanthus bulb extract, phospholipids, sphingolipids, sodium citrate, p-anisic acid, betula alba juice, tricholoma matsutake extract, picea abies extract, carya ovata bark extract, saccharomyces ferment, lauroyl lysine, hydroxyapatite,, caprylhydroxamic acid, 1,2-hexanediol, trisodium ethylenediamine disuccinate, sodium lauroyl glutamate, glyceryl stearate, cetearyl alcohol, stearic acid, citric acid, pentylene glycol, tocopherol, acacia senegal gum, xanthan gum, sodium hydroxide, phenoxyethanol.