If you have spent any time scrolling through your feed lately, chances are you have been confronted by a rather bizarre genre of beauty videos. They usually feature someone rubbing a seemingly innocuous cream into their face, only for their expression to morph into a grimace. The captions gleefully trumpet a “beauty is pain” ethos, leaving you mildly confused and wondering why anyone would willingly subject themselves to what looks like rubbing invisible shards of glass into their skin.
Welcome to the world of marine spicules—or, as the internet has aggressively rebranded them, “liquid microneedling”. Despite the slightly terrifying marketing videos, there is no need to villainise the ingredient. At its core, the science is straightforward. Marine spicules are microscopic, needle-like structures derived from sea sponges. When massaged into the skin, usually as one of the ingredients in a serum, cream or exfoliating product, they create tiny, temporary channels in the outermost layer, lowering its natural resistance and allowing all the products in the formula to sink in far more effectively.
“Derived from marine sponges, these microscopic bio-needles mechanically puncture the stratum corneum to create transient epidermal microchannels, significantly lowering barrier resistance to maximise the penetration of active ingredients while triggering a localised inflammatory cascade that accelerates cellular turnover for enhanced texture and radiance,” explains Dr Geoffrey Vaz, dermatologist and founder of Maven Esthetics. In short, they function as a temporary delivery system, letting your serums penetrate deeper, nudging your skin to shed dead cells faster and prompting new collagen production along the way.
Their sudden surge in popularity comes down to our collective obsession with visible bathroom-counter results. We are drawn to high-performance “bridging” technologies that offer a taste of professional treatments without the clinical downtime.
It stings. That’s the point
But what does it actually feel like? Dr Naznin Holia, aesthetic physician and founder of Amber Cosmetology, notes that users should brace themselves for a distinct experience. “Most people feel an itchy sensation, as though there are tiny fibres on their skin. Then their skin gets red,” she says. Dr Vaz agrees that managing sensory expectations is key to sticking with it: “Upon application, patients will experience a distinct localised prickling or stinging—a direct, tactile indicator of the bio-needles embedding into the stratum corneum.” It is a glassy sensation that lingers when you touch your face but eventually gives way to a noticeable improvement in smoothness and brightness.
Before you cancel your clinic appointments, though, let us be clear: spicules are not a replacement for medical-grade microneedling. The distinction lies entirely in depth. “While frequently marketed as ‘liquid microneedling’, spicules operate strictly at a superficial, epidermal level. They lack the precise depth control (0.5 mm to 2.5 mm) of professional, in-clinic mechanical or RF microneedling, which is required to penetrate the reticular dermis, disrupt old collagen matrices, and induce true dermal remodelling,” says Dr Vaz. Dr Holia is equally pragmatic: “If you want to fix acne scars or meaningfully address ageing, you need in-clinic microneedling, not marine spicules.”
Where they do earn their place
Used correctly, however, this technology is an excellent tool for targeting dullness, uneven texture, and lost radiance. Rather than being a threat to your face, spicules act as a powerful catalyst, ensuring your creams and serums actually reach where they can do their best work. For anyone looking to maintain a smooth, luminous complexion and extend the time between structured clinical visits, this is a genuinely compelling home-care option.
The key to keeping things beneficial, rather than dramatic, comes down to barrier care and skin compatibility. Resilient skin types will thrive on the faster cellular turnover; those with highly reactive skin, active rosacea, or eczema should give this one a miss, as the microscopic channels can easily trigger irritation on an already compromised base. If you do decide to try spicules, a few ground rules apply. Patch-test first, introduce the product conservatively (once a week to begin with), and avoid pairing it with aggressive chemical exfoliants or strong retinols in the same session. As both experts note, the true value of spicules lies in being a precise, intentional addition to your routine. Not, it bears repeating, an excuse to test your threshold for pain.
