PDP Image of the No. 1 Serum , 30ml / 1.0 fl oz

No. 1 Serum - Vitamin C

$130
Skip to product information
CULT FAVE
PDP Image of the No. 1 Serum , 30ml / 1.0 fl oz
  • PDP Image of the No. 1 Serum , 30ml / 1.0 fl oz
  • Stack of No1 Serum 15ml / 0.5 fl oz , 30ml / 1.0 fl oz and 2pack 15ml / 1.0 fl oz
  • model applying MUTHA No. 1 Serum, 15ml / 0.5 fl oz , 30ml / 1.0 fl oz
  • Skincare ingredients with their benefits displayed on a white background, 15ml / 0.5 fl oz , 30ml / 1.0 fl oz
  • Woman holding a skincare serum with product features listed on a white background, 15ml / 0.5 fl oz , 30ml / 1.0 fl oz
  • Three skincare products with labels and text on a white background, 15ml / 0.5 fl oz , 30ml / 1.0 fl oz
  • PDP Image of the No. 1 Serum , 30ml / 1.0 fl oz
  • Stack of No1 Serum 15ml / 0.5 fl oz , 30ml / 1.0 fl oz and 2pack 15ml / 1.0 fl oz
  • model applying MUTHA No. 1 Serum, 15ml / 0.5 fl oz , 30ml / 1.0 fl oz
  • Skincare ingredients with their benefits displayed on a white background, 15ml / 0.5 fl oz , 30ml / 1.0 fl oz
  • Woman holding a skincare serum with product features listed on a white background, 15ml / 0.5 fl oz , 30ml / 1.0 fl oz
  • Three skincare products with labels and text on a white background, 15ml / 0.5 fl oz , 30ml / 1.0 fl oz
No. 1 Serum - Vitamin C

No. 1 Serum - Vitamin C

$130
The Zoe Report Best Vitamin C
Glamour Best Brightening Serum
Harper's Bazaar UK Best Newcomer
  • Dermatology & Allergy Tested
  • All Skin Types
  • Sensitive Skin
DESCRIPTION
The MUTHA No. 1 Serum is a clinically tested, do-it-all vitamin C serum that creates healthier skin with ingredients you can trust. Its advanced, potent formula features MUTHALOAD® Core Technology, which includes four molecular weights of Hyaluronic Acid, Niacinamide, and Rice Kefiran.

Our bio-fermented blend allows its clinically-proven, effective ingredients to be absorbed easily and enhance results. TETRAHEXYLDECYL ASCORBATE (THD) — a stabilized form of Vitamin C shown to be 50x more effective than L-Ascorbic Acid — helps reduce pigmentation and increase collagen production. Hyaluronic acid and niacinamide work to hydrate, balance, and protect the skin barrier.

The No. 1 Serum is your complete protecting, hydrating, and repairing treatment.

97% Natural Origin. Dermatologist and Allergy tested. For all skin types, including sensitive skin. Never tested on animals.
INGREDIENTS

Aloe Barbadensis Leaf Juice, Tetrahexyldecyl Ascorbate, Glycerin, Camellia Japonica Seed Oil, Water (Aqua) (Eau), Propanediol, Ethylhexyl Olivate, Niacinamide, Oryza Sativa (Rice) Bran Oil, Sodium Hyaluronate, Sodium Hyaluronate Crosspolymer, Hydrolyzed Sodium Hyaluronate, Sodium Acetylated Hyaluronate, Ferulic Acid, Glycyrrhiza Glabra (Licorice) Root Extract, Euterpe Oleracea Fruit Extract, Calendula Officinalis Flower Extract, Camellia Sinensis Leaf Extract, Amorphophallus Konjac Root Extract, Hydrolyzed Rice Bran Extract, Kefiran, Xanthan Gum, Polyglyceryl-4 Oleate, Sodium Acrylates Copolymer, Polyglutamic Acid, Pentylene Glycol, Ethylhexylglycerin, Potassium Sorbate, Sodium Benzoate, Citric Acid
HOW TO USE

Apply 1-2 pumps of the No. 1 Serum in the morning and evening to dry, clean skin on the face, neck, and décolletage. Use the No. 1 Serum by itself or follow with a moisturizer like the MUTHA Face Oil or Cream.

ALSO CONSIDER

Amniotic Toner
Amniotic Toner
bottle of MUTHA Beauty Sleep Eye Cream against a gray background
Beauty Sleep Eye Cream
MUTHA NO. 1 Serum bottle with skincare benefits on a white background

CLINICALLY PROVEN.
VISIBLY TRANSFORMED.

CLINICALLY TESTED TO VISIBLY FIRM, BRIGHTEN, AND RESURFACE THE COMPLEXION.
  • Clinically proven to visibly reduce fine lines and wrinkles after 8 weeks of use¹
  • Clinically proven to improve skin firmness and elasticity after just 4 weeks of use¹
  • Clinically proven to improve the look of dark spots and hyperpigmentation¹
  • Clinically proven to visibly reduce the appearance of pores and blemishes¹
  • Dermatologically tested, safe for all skin types

¹Based on a clinical study conducted on 33 subjects over an 8-week period

TRUSTED BY
MOMS.
EDITORS.
DERMS.

How To Tell If Your Skin Barrier Is Compromised (And How To Fix It)

This treatment uses niacinamide to restore the ceramide barrier. It’s also formulated with bio-fermented active ingredients to actively feed skin flora.

HUFF POST

REASONS TO LOVE THE NO. 1 SERUM

DO IT ALL, LIKE YOUR MUTHA

It's a serum that does it all, loaded with clinically proven, bio-fermented ingredients that nourish and soothe the skin. It's made with gentle but effective actives designed to provide antioxidant benefits and treat imperfections like dark spots and fine lines. Simplify your routine with a serum that hydrates, treats, and protects in one step.

STABLE FORM OF VITAMIN C

The No. 1 Serum is formulated with a stabilized form of Vitamin C—Tetrahexyldecyl Ascorbate(THD) — that has been shown to be 50x more effective than L-Ascorbic Acid, a widely popular Vitamin C option. This much more stable form of Vitamin C helps with preserving the potency of associated benefits including the reduction of dark spots and antioxidant properties.

4x THE HYALURONIC ACID

The No. 1 Serum contains four molecular weights of Hyaluronic Acid, while most popular serums only have two! This superstar ingredient deeply hydrates and plumps the skin, and helps strengthen the skin barrier against damage and transepidermal water loss.

MUTHALOADED WITH BENEFITS

MUTHALOAD Core Technology is an advanced formula designed to nourish, balance, soothe and protect the skin barrier withHyaluronic Acid, Niacinamide, Rice Peptides, and Rice Kefiran.

Texture droplets of MUTHA No. 1 Serum

Frequently bought with

FAQS

Close-up of a woman's face with hands gently touching her skin on a white background
Is the No. 1 Serum suitable for sensitive skin?

The No. 1 Serum is dermatologically tested and approved for sensitive skin. It is formulated to help balance and boost skin’s resilience and natural protective barrier.
What order is the No. 1 Serum in your skincare routine?

The No. 1 Serum must be applied to clean, dry skin. Start by thoroughly cleansing with your go-to face wash and patting the skin dry. Then apply the No.1 Serum, and finish with the MUTHA Face Oil or moisturizer of your choice.
Does the No. 1 Serum oxidize?

The No. 1 Serum has stabilized Vitamin C and Ferulic Acid, which naturally oxidize and change color over time, especially due to air exposure. The 30mL No.1 Serum has been switched to a pump, which helps slow oxidation!
Does the No. 1 Serum have a scent or fragrance?

The No. 1 Serum has no added fragrance or perfumes. It is formulated with Vitamin C, which has an intense, "burnt" odor that can be unpleasant to some. It also contains fermented material and plant extracts, which have a natural, herbaceous scent.
Can I use this while pregnant?

We get this question from MUTHA’s every day and we totally get why.

Our founder, Hope Smith, created MUTHA while she was pregnant because she could not find products that met her standards for clean, high-performance care. Every formula we make is dermatologist-tested, free of parabens, phthalates, PEGs, and the industry’s other no-gos. Plus, we are fully transparent about every single ingredient so you and your OB can review them with confidence.

While our community of moms, editors, and even doctors love MUTHA for pregnancy and beyond, we always recommend checking with your healthcare provider. Every body and every pregnancy is different, and what works for one pregnancy might not work for another. We will be here to support you through it all. 💜