Ursa Major Lunar Bloom Retinal Serum, a moisturizing facial serum containing retinal, four o'clock flower, gardenia, and ceramides. The serum is shown in both a bottle and a box.

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.
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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

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

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  • Lunar Bloom Retinal Serum Reviews

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