mixsoon Bean Sun Serum SPF 50+: Fermented-Bean Base Sunscreen Serum

mixsoon is a Korean clean-beauty brand with an unusual ingredient approach: fermented beans (soybean, mung bean, etc.) as the base for multiple products across the line. Their Bean Sun Serum extends this philosophy into sun care, using fermented bean extract as the hydrating base for an SPF50+ PA++++ sunscreen serum. At $41.95 for 50ml, this is mid-upper tier priced for a branded Korean SPF.

Fermented beans in Korean skincare are backed by tradition (doenjang, fermented soybean paste, has been a Korean food staple for centuries) and contemporary research showing fermentation increases bioavailability of beneficial compounds like isoflavones, peptides, and amino acids. The fermented bean extract acts as both an active and a hydration base, which gives mixsoon products their characteristic simplicity.

What It Does

Hybrid UV filters deliver SPF50+ PA++++ broad-spectrum protection. Fermented bean extract provides antioxidants (isoflavones from soy) and hydration. The serum format absorbs quickly without white cast or greasiness. The simple ingredient list appeals to sensitive skin and clean-beauty shoppers.

Who It's For

• Clean-beauty SPF buyers: Minimalist ingredient approach.
• mixsoon brand loyalists: Continues the Bean product line.
• Sensitive skin: Short ingredient list reduces irritation risk.
• Oily or combination skin: Serum format stays light.
• Under-makeup daily wear: Clean finish layers well.

Key Specs

• Volume: 50ml
• Price: $41.95
• SPF: 50+ PA++++
• Hero supports: fermented bean extract, hyaluronic acid, panthenol
• Filter type: hybrid chemical
• Texture: serum, lightweight
• Fragrance: very mild or unscented

How to Use

Apply as final AM step. Use approximately 1 to 1.5ml for face-plus-neck coverage. Pat into skin, wait 60 seconds before makeup. Reapply every 2 hours in direct sun.

FAQ

Does "fermented bean" actually do anything?

Fermented bean extracts contain isoflavones and peptides with documented antioxidant and skin-conditioning effects. At the concentrations used in cosmetic products, the effect is supportive rather than dramatic.

How does this compare to Beauty of Joseon Relief Sun?

Beauty of Joseon uses rice base, broader mass-market positioning, slightly lower price. mixsoon uses bean base, clean-beauty positioning, slightly higher price. Both are quality Korean SPF options; choose on ingredient preference.

Does it whitecast?

Minimal to none. Modern hybrid filter system is largely invisible.

Is it good for oily skin?

Yes. Serum format doesn't feel heavy or greasy.

How long does 50ml last?

Daily use: 6 to 8 weeks.

Related Products

Pair with other mixsoon Bean products for a consistent ingredient theme. Browse the mixsoon collection or Korean sunscreens.