Propolis Serum

Most propolis serums list the ingredient proudly somewhere in the middle of the INCI list, a polite 10 or 20 percent, buffered by water and glycerin. Bonajour decided that was boring. They took propolis extract, slammed it into the first slot of the ingredient list at a quoted 80 percent, and essentially built a water-free serum around the stuff. The result is one of the densest propolis formulas you can buy, and the reason a small Korean indie brand ended up on acne-subreddit wishlists years before most Western retailers figured out how to spell Bonajour correctly.

Propolis, if you haven't fallen down that rabbit hole yet, is the resinous material honeybees collect from tree buds and use to seal their hives. It's packed with flavonoids, phenolic acids, and terpenes, and a growing body of research suggests it has genuine antibacterial and anti-inflammatory activity — the kind of profile that makes it interesting for breakout-prone skin that can't handle stronger actives. When you concentrate it to 80 percent in a water-based serum, you basically get a flavonoid bath for your face.

The texture is the first thing that tells you this isn't a standard serum. It's a clear, pale-amber jelly that holds its shape for a second on the dropper before breaking into something almost water-thin on contact with skin. There's a brief tacky moment — about thirty seconds — and then it's gone, absorbed into a soft glazed finish that plays well under moisturizer and sunscreen. The scent is faint and honey-adjacent, natural rather than perfumed, and dissipates quickly.

What the formula does well is manage active inflammation. Users with reactive, acne-prone, or post-procedure skin consistently report that breakouts look calmer within a few days and that persistent redness quiets down over the first couple of weeks. The supporting cast — green tea, willow bark, saccharomyces ferment, a long list of botanical extracts — reinforces that anti-inflammatory positioning without throwing in any oils, butters, or fatty esters that could congest or trigger fungal flares. It's one of the few soothing serums you can reasonably recommend to someone managing both regular acne and seborrheic dermatitis without hedging.

Where it's less interesting is as a standalone hydrator for dry skin. The humectants are present but restrained, and there's no occlusive layer to keep moisture in. Dry-skinned users who expect a propolis serum to do the job of a glycerin-and-HA cocktail tend to come away underwhelmed. Pair it with a proper ceramide moisturizer and the experience improves dramatically, but on its own it's a treatment serum first and a hydrator second.

The honesty required on the vegan question: Bonajour markets itself with a lot of plant-forward imagery, but propolis is a bee-derived ingredient. It's cruelty-free by any reasonable definition, but it is not vegan, and anyone avoiding bee products for ethical reasons should skip this entire category. People with known bee or honey allergies should patch test before committing to a full-face application — propolis can provoke contact reactions in sensitized individuals, and at this concentration the risk is real if you're predisposed.

Value is where the serum quietly excels. A 100ml bottle typically lands somewhere between 15 and 22 dollars depending on retailer and sale — roughly double the size of most comparable K-beauty propolis serums at a lower price, and a fraction of what a Western soothing serum in this category would run you. For someone building a calm, acne-prone routine on a budget, the cost-per-milliliter math is hard to argue with.

This isn't a hero-active serum in the vitamin C or retinol sense — it won't fade hyperpigmentation or rebuild a collagen network. What it will do is quietly buffer reactive skin, reduce the visible inflammation that makes breakouts look worse than they are, and play beautifully in a routine alongside stronger actives as the calming middle step. In a category where most of the innovation is marketing, the decision to simply use more of the ingredient turns out to be the innovation.

Formula

The Science

Propolis has attracted real scientific interest over the past decade for its antibacterial, anti-inflammatory, and wound-healing potential. Its activity comes from a complex mix of flavonoids (notably pinocembrin and chrysin), phenolic acids like caffeic acid, and various terpenes, though the exact profile varies significantly with geographic origin and bee species. In vitro studies have repeatedly shown activity against Cutibacterium acnes and Staphylococcus aureus, the two bacteria most implicated in inflammatory acne, and several small clinical studies have reported improvements in acne lesion counts when propolis is used topically over 4–8 weeks.

What makes this specific formulation interesting is the concentration. Most commercial propolis products use the ingredient at 5–20%, where the flavonoid dose delivered to skin is modest. At roughly 80%, Bonajour is essentially maximizing the flavonoid payload while skipping the water phase entirely — an approach more common to essence-style Korean products than Western serums. The supporting ingredients aren't incidental either: green tea's epigallocatechin gallate and the willow bark salicin both contribute independent anti-inflammatory mechanisms, while saccharomyces ferment contributes amino acids and peptides that support barrier recovery. The combination targets inflammation through multiple parallel pathways rather than relying on any single active.

The limitation worth being honest about is that most propolis research to date has been in vitro or in small clinical populations, and standardized concentration-response data is still lacking. The evidence base is promising rather than definitive, and the ingredient's efficacy will depend somewhat on the specific propolis source used — something no brand, including Bonajour, discloses in detail.

Dermatologist Perspective

Dermatologists generally regard propolis as a reasonable adjunct ingredient for mild inflammatory acne and post-procedure redness, particularly for patients who can't tolerate prescription actives or who want to layer a soothing step into a retinoid-heavy routine. Board-certified dermatologists note that propolis is among the more common sources of allergic contact dermatitis in cosmetic ingredients — roughly 1–3% of patch-tested patients in some European studies — so a patch test before full-face use is commonly recommended, especially for anyone with a known history of bee sting reactions. When tolerated, this serum is frequently cited in K-beauty–savvy derm circles as a gentle anti-inflammatory option that pairs well with benzoyl peroxide, adapalene, or azelaic acid prescriptions without compounding irritation.

Guidance

Bonajour built a small cult following in Korea by stripping formulas down to one star ingredient per product and pushing its concentration as high as possible. The Propolis Serum was the breakout that put the brand on the map internationally, spreading through YesStyle and acne-focused Reddit threads before most Western retailers had even heard of it.

About Bonajour Established Brand (5–20 years)

Bonajour is a Korean indie skincare brand known for botanical-forward, minimalist formulations. The Propolis Serum has been available since at least 2017, giving it a reasonably established track record among K-beauty communities, though independent clinical validation of its specific formulas is limited.

Myth vs. Reality

Myth

Propolis is vegan because it's a plant resin

Reality

Propolis is collected and processed by honeybees from plant resins, which makes it bee-derived and not vegan. Bonajour markets itself as natural but this serum is not suitable for strict vegans.

Myth

A high propolis percentage is guaranteed to break you out because it's sticky

Reality

In this formula the propolis is suspended in a lightweight water/glycerin base with no heavy oils or butters, so most acne-prone users report no congestion or fungal flares despite the density.

FAQ

Common Praise

"Jelly texture absorbs without tackiness"

"Visibly calms breakouts and redness"

"Generous 100ml size lasts months"

"Non-comedogenic on oily skin"

Common Complaints

"Faint honey-herbal scent some dislike"

"Minimal results for very dry skin"

"Bee-derived despite brand's natural marketing"

"Can feel slightly tacky in humid weather"

Notable Endorsements

Frequently featured in K-beauty YouTuber routines for acne-prone skin

Appears In

best serum for acne best k beauty serum for sensitive skin best propolis serum best budget korean serum best serum for compromised skin barrier

Related Conditions

acne sensitivity dehydration compromised skin barrier

Related Ingredients

propolis green tea willow bark niacinamide