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Ultra-C Serum

16 reviews
$98.00 $98.00
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Ultra-C Serum
16 reviews

[ hyperpigmentation ]

aos Moon symbolizing night time use

Stabilized 15% vitamin C combined with our powerful Herbalbright™ Complex delivers advanced environmental protection against photoaging by neutralizing free radicals that cause accelerated signs of aging. Added ferulic acid and vitamin E team up to repair dry, damaged skin and minimize fine lines and wrinkles.


  • Fights free radicals (UVA, UVB, infrared radiation A) and helps heal cellular damage from environmental pollutants and stress
  • Lightens scars and dark spots
  • Stimulates collagen production to increases skin firmness and visibly reduce wrinkles

DIRECTIONS: Shake well. Massage 2-3 drops into face, neck, chest, backs of hands--anywhere that shows sun damage or hyperpigmentation. Will not cause sun sensitivity. Use morning and evening for 24 hour protection.

NOTE: Slight color variations are normal in our small-batch products


5% Tetrahexyldecyl Ascorbate is a stable, oil soluble Vitamin C ester that clarifies and brightens skin tone by inhibiting melanogenesis (production of pigment. It also stimulates collagen production, making skin thicker and more elastic.

10% M.A.P. Magnesium Ascorbyl Phosphate is a stable, water soluble derivative of Vitamin C that lightens dark spots by inhibiting tyrosinase activity and suppressing skin pigmentation. It’s gentler than L-asorbic acid on sensitive skin.

Herbalbright Complex: is our proprietary blend of certified organic and ethically wild-harvested Pacific Northwest alpine plants packed with powerful antioxidants that works synergistically to brighten, lighten and even skin tone. By inhibiting tyrosinase, which is involved in melanin production, it reduces the intensity of "age" spots and dark patches and decreases redness and inflammation.

FULL INGREDIENTS LIST: Aloe vera gel*, goji berry extract*, magnesium ascorbyl phosphate 10% (vitamin C), tetrahexyldecyl ascorbate 5% (vitamin C), elderberry fruit extract*, HerbalbrightTM Complex (extracts of mallow*, peppermint*, cowslip*, lady’s mantle*, speedwell*, lemon balm*, yarrow*, Helichrysum* and bearberry fruit (uva ursi)*), rosehip seed oil*, evening primrose oil*, kojic acid, vitamin E oil (wheat-free mixed tocopherols), ferulic acid (rice extract), lactobacillus/lemon peel bioferment, ylang ylang essential oil, xanthan gum, essential oils of Roman chamomile*, bergamot, Oregon lavender* and immortelle (helichrysum)*.

*Certified Organic
~Wild Harvested

Handcrafted in Bend, Oregon 1 fl oz | 30ml

Customer Reviews
4.9 Based on 16 Reviews
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Filter Reviews:
Molly B.
United States
I recommend this product

My long-standing favorite.

The C-Serum is my constant and has been for years. I switch out the other serums to provide variety but always have C-Serum to apply once a day. It is also the perfect gift for my mom and sister as they use it the same way I do.

United States United States
I recommend this product

Liquid Gold

This was the first product I ever used from AOS and I feel in love! I purchase this for all my friends to get hooked on AOS. You see great results quickly! AOS is amazing with samples which shows me my second favorite product is willow bark serum. With this combo you will have a clear skin!

Ellie G.
United States United States
I recommend this product

My new favorite: Ultra-C Serum

The serum feels luxurious on my skin and offered a very mild exfoliation and noticeably brighter skin. Love it.

Margaret P.
United States United States
I recommend this product

My favorite summer serum

I’ve used this serum every summer for three years and love it! I use it to help control sun exposure spots and it does help. It also smells clean and fresh every morning and night, and works through the fall/winter until I run out. Please keep making this :)

*Certified Organic ~Wild Harvested

Handcrafted in Bend, Oregon

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