Foundation Caking? SQ-SE 1017 PEG-10 Dimethicone Molecular Glue Technology Solves It All

Foundation That Feels Like a Mask? This “Molecular Glue” Technology Locks Your Makeup in Place—Flawlessly.

You spend an hour perfecting your makeup every morning. One subway ride later—your foundation is floating on your face like a cheap Halloween mask. By afternoon, your T‑zone is gleaming like a mirror, while your cheeks are so parched that foundation settles into every fine line around your mouth and eyes. Reach for a touch‑up? It pills instantly. The more you try to fix it, the patchier it becomes.

Floating, caking, fading, mask‑like—the “Four Horsemen” of every foundation. Pack it with film‑formers for long wear? Hello breakouts, dryness, and a face that feels shrink‑wrapped in glue. Pack it with heavy oils for hydration? You get a greasy shine and foundation smears all over your phone screen.

The problem lies in the emulsification system.

The problem isn’t your formulator’s effort—it’s the emulsion system they chose. A foundation is a fiendishly complex cocktail—water, silicone oils, pigments, UV filters, active ingredients—all of which naturally repel each other. Only an emulsifier can bring them into a stable union. Traditional emulsifiers are either too “heavy,” pressing pigments and oils onto the skin’s surface and creating that suffocating mask‑feel; or too “crude,” letting water and oil separate and pigments clump, giving you a patchy, uneven finish.

We need a better “glue”—one that binds water, oil, and pigments together firmly, without separation, without clumping, without mask‑effect.

SQ-SE 1017 |"Molecular Glue" black technology.

SQ‑SE 1017 (INCI: PEG‑10 Dimethicone) — a low‑viscosity polyether‑modified silicone emulsifier, engineered for W/Si (water‑in‑silicone) and W/O (water‑in‑oil) systems. Its molecular structure is like a precision comb—PEG chains are water‑loving, gripping water molecules tightly; alkyl and siloxane chains are oil‑loving, holding onto oils and pigments firmly. This is what we call “Molecular Glue.” Water, oil, and pigments are all “glued” together into a uniform, resilient film that adheres to skin like a second skin—truly “gripping,” with no floating, no patchiness.

Skin-feel upgrade |"Thixotropy Technology" — the secret behind the "bursting-water" texture.

But adhesion alone isn’t enough—skin feel is the consumer’s first impression.

SQ‑SE 1017 imparts a unique “thixotropic” behaviour to the formulation:At rest, it sits as a rich, smooth cream that stays perfectly in place without running;Upon application, shear stress breaks the weak intermolecular bonds, and the emulsion instantly “liquefies,” releasing encapsulated water and active ingredients—delivering a cooling “water‑burst” sensation.This is Thixotropic Technology — cream at rest, water upon rubbing, droplets on the skin.

This unique rheology gives you the best of both worlds: ultra‑lightweight texture and serious coverage. As you blend, the water bursts out, spreading pigments evenly across the skin with a dew‑like freshness. Moments later, the water evaporates, leaving a soft‑focus, long‑wearing film that feels fresh and non‑greasy all day.

Why the W/Si system outperforms traditional O/W emulsions.

At this point, you might ask: aren’t many O/W foundations on the market lightweight too? Why switch to a W/Si system?

The answer is: traditional O/W (oil‑in‑water) systems may feel fresh, but they carry two inherent flaws that formulators know all too well—and rarely talk about.

❶ Aggressive preservation systems

In O/W, the continuous phase is water. High water content means an ideal breeding ground for microbes, so formulators must load up on preservatives (often cocktails of them). Over time, this can irritate sensitive or compromised skin.

❷ Poor capacity for high‑load active ingredients

O/W emulsifiers are mostly hydrophilic, so they struggle to dissolve and stabilise oil‑soluble actives (e.g., retinol, vitamin E, organic UV filters). Pump up the concentration and they’ll quickly precipitate or degrade—rendering your “powerful” formula ineffective.

The W/Si (water‑in‑silicone) system built with SQ‑SE 1017 elegantly sidesteps both issues from the ground up: The continuous phase is silicone oil, which is hydrophobic by nature—it naturally resists microbial growth, so preservatives can be dramatically reduced, making the formula gentler on skin. The silicone phase can stably encapsulate a high load of oil‑soluble actives and UV filters, while the internal water phase carries water‑soluble powerhouses like niacinamide and hyaluronic acid—truly delivering “high potency, real efficacy” rather than empty claims. In other words: traditional O/W does surface‑level work; W/Si does the real heavy lifting—inside and out.

Four pain points |eliminated one by one.

Pain Point 1: Caking, flaking, poor adhesion.

Foundation feels like plaster? That’s because pigments aren’t evenly dispersed—they’re piling up in your skin’s texture and pores.

SQ‑SE 1017’s “Molecular Glue” architecture provides outstanding pigment dispersion. It evenly distributes pigments across the skin’s surface instead of letting them clump. The moment you apply, the foundation seems to be “absorbed” by your skin—hugging every line and pore, with no floating or caking.

Pain Point 2: Heavy, pore-clogging, mask-like finish.

Add more pigments for coverage, more film‑formers for longevity—and you end up with a face full of closed comedones.

SQ‑SE 1017 is a low‑molecular‑weight, low‑viscosity emulsifier, giving creams a non‑sticky, non‑thickening feel with a silky‑smooth slip. It creates low‑viscosity yet exceptionally stable emulsions that feel light, fresh, and never greasy. And because it works at very low use levels, you don’t need to pile on heavy oils and thickeners. Simpler formula, lighter skin burden.

Pain Point 3: Poor longevity, sweats off, wipes away at a touch.

All that effort—and one meal or one sweat session and it all falls apart.

The W/Si emulsion system built with SQ‑SE 1017 delivers excellent water resistance. It withstands washing and perspiration, forming a breathable yet durable film on the skin. Whether under blazing heat or high humidity, your makeup stays put—no patchiness, no dulling.

Pain Point 4: Dry, tight feeling — the longer you wear, the drier it gets.

The biggest pitfall of long‑wear foundations—sacrificing hydration for longevity.

SQ‑SE 1017 contains PEG (polyethylene glycol) groups that lock in moisture, forming a breathable hydration film on the skin. It delivers the signature refreshing silicone feel while providing lasting moisture without tightness. And it’s friendly to all skin types—oily skin stays matte and controlled; dry skin stays comfortable and hydrated. Its mild, non‑ionic nature also makes it suitable for sensitive skin.

SQ-SE 1017|Core benefits at a glance.

✅“Molecular Glue” bonding — Unites water, oil, and pigments into one, giving you a “gripping” finish without patchiness.

✅ Thixotropic water‑burst — Cream at rest, water upon rubbing—ultra‑light skin feel.

✅ Low preservation needs — W/Si continuous phase is silicone oil, naturally resisting microbes—gentler on skin.

✅ High active loading — Stabilises both oil‑soluble and water‑soluble actives for a truly potent formula.

✅ Cold or hot process compatible — Flexible and efficient production.

✅ Superior stability — Survives 4↔40°C cycling tests—10 cycles, no separation.

A truly great foundation is one you forget you’re wearing—leaving behind nothing but flawless, perfect skin.

SQ‑SE 1017 (PEG‑10 Dimethicone)—with its “Molecular Glue” that binds water, oil, and pigments, its thixotropic water‑burst that revolutionises skin feel, and its W/Si system that overcomes the two biggest formulation hurdles (preservation and active loading)—redefines foundation excellence across five dimensions: lightweight, long‑wearing, hydrating, gentle, and potent. Choose SQ‑SE 1017 to create market‑leading lightweight W/O and W/Si foundations. Make every bottle of foundation your consumers’ holy grail.