Every time she tried a vitamin C, her cheeks lit up like she had run a marathon. The strong L ascorbic acid versions stung, peeled, and made her wonder if glow was just a thing for other people. It is not. This serum was made for the woman who has been pushed off the vitamin C aisle by sensitive skin. It brightens, it evens, and it does not sting. That is the whole pitch.

I am Kay. So Buttery Skin started in my kitchen after my daughter's eczema, and once her body was calm, I started building face products for my own forties, when my skin became reactive in ways it never had been before. This serum is the gentle vitamin C I wish I had ten years ago.

What is inside

A gentler vitamin C derivative instead of straight L ascorbic acid. That is the key. It brightens tone and supports an even complexion without the sting and instability of harsher vitamin C formulas. The base is plant based, fragrance free, and made to layer with everything else in your routine.

How to use it

In the morning, cleanse and pat skin partly dry. Press two or three drops into damp skin, wait ten seconds, then layer your face cream. Always finish with sunscreen, because protected skin is brighter skin. At night, skip the vitamin C and use your serum and cream as usual.

Frequently Asked Questions

Will this sting like other vitamin C serums?

It is designed not to. We use a gentler derivative instead of L ascorbic acid, which is the form that tends to sting and oxidize quickly.

How long until I see brighter skin?

Most customers see more even tone within four to six weeks of consistent daily use. Sunscreen is the multiplier.

Can I use this with retinol?

Yes. Vitamin C in the morning, retinol at night, gentle moisturizer always.

Is this safe during pregnancy?

Vitamin C is generally considered pregnancy safe, but every pregnancy is different. Check with your provider.

Will it help dark spots?

Daily use may help fade dark spots over time, especially when paired with sunscreen. Patience is the secret ingredient.

Can I use this if I have rosacea?

Many customers with rosacea tolerate this serum well, but always patch test on your jawline first. If your skin is in an active flare, wait until it calms down to introduce a new active.

Looking for more?

Round out your routine in the Face Collection. For body, see the Body Butter Collection, and for eczema patches the Eczema Care Collection. Save in Refill and Save, learn about us, or read the sensitive skin guide.

Kay.