Spicules Are the Next K-Beauty Ingredient Making Waves Online. Here’s What to Know.

Reported by Women's Health Magazine.

K-beauty has an almost uncanny ability to surface ingredients the rest of the world hasn't caught up to yet — snail mucin, salmon sperm, fermented everything. The latest to cross over: spicules, microscopic, needle-like silica structures harvested from marine and freshwater sponges that are now showing up in serums, ampoules, and exfoliating treatments everywhere. According to Women's Health Magazine, the spicule market was valued at $9.3 million in 2025 and is projected to hit over $32 million by 2036 — so whether you're ready or not, this ingredient is coming for your routine.

The appeal is obvious. Spicules are being marketed as microneedling in a bottle — a description cosmetic chemist and BeautyStat founder Ron Robinson acknowledges but immediately complicates. Real microneedling creates controlled micro-injuries in the dermis, stimulating collagen production at a depth of up to roughly 8,000 micrometers. Spicules, averaging around 200 micrometers in length, don't come close to that. What they can do is more nuanced: create microscopic channels through the epidermis that improve absorption of active ingredients like niacinamide, hyaluronic acid, vitamin C, and peptides — essentially acting as a smarter delivery system for the actives already in your routine. Board-certified dermatologist Whitney Hovenic, MD, notes they may also trigger a mild wound-healing response that encourages cell turnover and smooths texture, though she's careful to distinguish this from how chemical exfoliants actually work.

Before You Stack Your Cart

The science is promising but not conclusive. Double board-certified cosmetic dermatologist Danny Guo, MD, puts it plainly: evidence that spicules increase ingredient absorption exists, but whether that translates to real clinical results "is still mostly speculative." Purification method also matters more than most brands disclose — enzyme-purified spicules (common in Korean formulas like those from Biodance, whose founder Mihwa Kim explains the process in detail) tend to be less irritating than those purified with acid, which can compromise the spicule's structure and roughen skin contact. Synthetic silica versions, increasingly used as demand scales, tend to feel sharper and less forgiving than sponge-derived ones.

Risks are real but manageable if you're not reckless about it. Sensitive skin types and anyone dealing with rosacea or eczema should approach with caution — overuse can disrupt your barrier fast. Stacking spicules with retinoids, exfoliating acids, or physical scrubs is asking for irritation. There's also a low but non-zero risk of granuloma formation, where immune cells cluster around the foreign material; Dr. Hovenic notes this is unlikely with OTC formulas that don't penetrate deeply, but it's worth knowing. Start with two applications per week, massage gently (don't scrub), and only buy from brands transparent about sourcing and testing. Apply after cleansing, before your heavier actives, and let your skin adjust before increasing frequency.

Spicules won't replace your microneedling appointment, but as an ingredient that pushes your actives deeper and nudges cell renewal — sourced thoughtfully and used with restraint — they're worth the experiment.

Read the original at Women's Health Magazine.