Lunar Bloom Retinal Serum - view 1

Lunar Bloom Retinal Serum

REWIND + SMOOTH

4.7
Rated 4.7 out of 5 stars
4.7 Stars (268 Reviews)
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.

30 mL| 1 FL OZ

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4.5
Rated 4.5 out of 5 stars
4.5 Stars (965 Reviews)

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.

Refreshingly different

Nothing to hide here. Just naturally awesome ingredients that help you achieve your healthiest, happiest skin.

Gentle on skin

Reduces appearance of lines

Smooths skin texture

Clean ingredients

Certified Plastic Negative

Vegan & cruelty-free

“Wake up to clear, radiant skin.”

Harpers Bazaar

“Boost the production of collagen and elastin while sealing in moisture.”

INSTYLE

“Hyper-effective at smoothing the appearance of fine lines.”

Esquire

“Rewinds the appearance of aging with gentle ingredients.”

The Quality Edit

“Gently tackle fine lines while restoring the skin barrier.”

Forbes

Pure, powerful ingredients

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

  • Retinal

    A form of Vitamin A that helps smooth the look of fine lines and wrinkles by promoting skin renewal

  • Four O’Clock Flower Cells

    A night-blooming flower that works to revive skin’s overall radiance

  • Plant-Derived Ceramides

    Help support the skin barrier while sealing in moisture

  • Gardenia Stem Cells

    Help rewind the look of fine lines and wrinkles by supporting collagen and elastin

  • Round-Headed Bush Clover Extract

    Enhances skin tone by promoting overnight renewal

  • Ginger Root Extract

    Soothes skin and reduces the appearance of redness

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  • ,
  • 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 recommended.


    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.


    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: What is the aroma?

    A: Lunar Bloom Retinal Serum is unscented.

    Lunar Bloom Retinal Serum Reviews

    4.7
    Rated 4.7 out of 5 stars
    Based on 268 reviews
    268 reviews
    • Karen T.
      Verified Buyer
      I recommend this product
      AGE RANGE 50's+
      SKIN TYPE Balanced
      SKIN CONCERN Fine Lines
      Rated 5 out of 5 stars
      6/4/25
      Love Ursa Major!

      Just like all the other UM products I've tried, I love this one too! Ursa Major has quickly become my favorite skin care line!! Thank you!

    • Linda A.
      Verified Buyer
      I recommend this product
      AGE RANGE 50's+
      SKIN TYPE Combo
      SKIN CONCERN Redness / Irritation
      Rated 5 out of 5 stars
      5/25/25
      A nice way to end my day

      This retinal serum has a nice feel and smell and often I don't need to add anything else to my face before going to bed.

    • Gretchen S.
      Verified Buyer
      I recommend this product
      AGE RANGE 50's+
      SKIN TYPE Balanced
      SKIN CONCERN Fine Lines
      Rated 5 out of 5 stars
      5/20/25
      Silky texture

      Love the feel of this serum. I can gave sensitive skin so am working towards using it every night. So far it is gentle on my skin.

    • Kayla B.
      Verified Buyer
      I recommend this product
      AGE RANGE 30's
      SKIN TYPE Combo
      SKIN CONCERN Breakouts
      Rated 5 out of 5 stars
      5/14/25
      Literally amazing

      This is the perfect non irritating retinal. Within only a few days of using my skin was soft and glowy and my pores had noticeably shrunk. Also did not break my acne prone combo skin out at all! Only made it look better

      Ursa Major Skincare
      5/19/25

      Amazing to hear, Kayla! We hope you keep enjoying for days to come!

    • Krista J.
      Verified Buyer
      I recommend this product
      AGE RANGE 40's
      SKIN TYPE Balanced
      SKIN CONCERN Fine Lines
      Rated 5 out of 5 stars
      5/4/25
      Really good

      I like this in combo before the Golden Hour

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