SQ‑SE 8020 | VP/Hexadecene Copolymer – The “Long‑Lasting Guardian” Film Former for Foundation

When Foundation Meets “Film‑Forming” Technology

In our previous article, we met SQ‑SE 1017 (PEG‑10 Dimethicone)– the “emulsification master” that brings silky spreadability and a lightweight feel to foundations. It solved the problem of “how to make foundation apply beautifully.”

Today, we focus on another indispensable behind‑the‑scenes hero – SQ‑SE 8020 (VP/Hexadecene Copolymer). If SQ‑SE 1017 is the architect who builds a perfect base, then SQ‑SE 8020 is the guardian who ensures that beauty lasts. It addresses a more ultimate question: how to make foundation “stay in place.”

Real Consumer Pain Points – Why Does Your Foundation Never Last Until Afternoon?

This is the daily frustration of countless foundation users. 91.5% of oily and combination skin consumers commonly experience foundation fallout and oxidation darkening; over 85.6% of consumers wear makeup for 10 hours or more daily, yet most foundations simply cannot last that long.

The core consumer demand can be summed up in three words: stay in place.

Specific pain points include:

• Oxidation & dullness – foundation darkens within two hours of going out
• Fallout & patchiness – foundation shifts after T‑zone oiliness, cakes and peels around nose and mouth
• Mask rubbing – foundation transfers to the mask, leaving the makeup incomplete
• Sweat streaks – foundation runs in white streaks when sweating in summer, ruining the look instantly
• Short wear time – requires frequent touch‑ups, which only get thicker and more unnatural

SQ‑SE 8020 – The Unique Power of an Oil‑Soluble Film Former

SQ‑SE 8020 has the INCI name VP/Hexadecene Copolymer – an oil‑soluble synthetic polymer that appears as a yellow viscous liquid with a density of 0.84‑0.93 g/cm³. Its insolubility in water is precisely the key to solving longevity issues. Thanks to its oil‑solubility, it integrates easily into the oil phase of foundations, and it supports cold‑processing – no heating is required during production, greatly simplifying manufacturing.

According to product data, the core features of SQ‑SE 8020 include:

• Excellent film‑forming – forms a continuous, flexible, and dense protective film on the skin
• Superior water & sweat resistance – imparts long‑lasting water repellency, keeping sweat and moisture out
• Outstanding dispersing & suspending – helps evenly disperse pigments like TiO₂ and ZnO, preventing sedimentation
• Amphiphilic nature – enhances overall emulsion stability
• Storage stability – remains stable for 24 months when kept sealed, away from light, at 5‑40°C

These features enable SQ‑SE 8020 to play three key roles in foundation:

1. Film‑forming – giving makeup an “invisible raincoat.”

The most core function is as a film former. Upon application, it quickly forms a continuous, flexible film with excellent water, sweat, and rub resistance – like putting an invisible “protective suit” on the foundation. Sweat won’t wash it off, tissues won’t wipe it off, and masks won’t rub it off.

2. Binding – “welding” pigments onto the skin.

As a binder, it ensures all solid particles – pigments, sunscreens, etc. – stay tightly bound together, preventing them from loosening. Pigments are firmly “anchored” to the skin and won’t shift, clump, or become patchy over time.

3. Dispersing – for a more even and premium finish.

As a dispersant, it helps pigments distribute evenly, making the foundation texture finer, application smoother, and delivering a more uniform finish with a superior skin feel.

Pain Points Eliminated One by One – How SQ‑SE 8020 Rescues Your Base Makeup

Pain Point 1: “Two hours out, and my makeup has darkened by a full shade.”

The main causes are pigment oxidation with sebum and pigment redistribution due to oil flow. The waterproof film from SQ‑SE 8020 locks pigments in place, preventing oxidation and movement, so the finish stays bright all day.

Pain Point 2: “One mask on, and all my foundation is rubbed off.”

Mask friction is the top enemy of makeup longevity. The flexible film of SQ‑SE 8020 has rub‑resistant properties, withstanding daily contact without breaking. This film is continuous and elastic, stretching with skin micro‑movements, so it won’t crack or peel from mask‑wearing or nose‑wiping.

Pain Point 3: “Summer sweat turns my foundation into white streaks.”

This is where SQ‑SE 8020 excels. Its hydrophobic nature makes the film insoluble in water – sweat simply slides off without dissolving or washing away the foundation. That’s why formulations with this ingredient offer excellent wash‑off and water resistance.

Pain Point 4: “The foundation becomes uneven after sitting in the bottle for a while.”

As a dispersant and suspending agent, SQ‑SE 8020 keeps pigments uniformly suspended, preventing sedimentation and agglomeration, ensuring consistent texture from the first drop to the last.

The Golden Combination with SQ‑SE 1017 – A Complete Cycle from “Smooth Application” to “Long‑Wear”

In the previous article, we discussed SQ‑SE 1017 (PEG‑10 Dimethicone) – the “emulsification master” that brings silky spreadability and a lightweight feel to foundations.

SQ‑SE 8020 (VP/Hexadecene Copolymer) solves the problem of “how to make it stay put.”

Together, they form a complete makeup chain:

Role	SQ‑SE 1017 (PEG‑10 Dimethicone)	SQ‑SE 8020 (VP/Hexadecene Copolymer)
Core function	Emulsification stability, silky spreadability, lightweight feel	Film‑forming lock‑in, water & sweat resistance, rub‑resistant longevity
Problem solved	“How to apply beautifully”	“How to stay in place”
Finish contribution	Love at first touch	Peace of mind all day long

This is the confidence behind the “invincible foundation formula”:

SQ‑SE 1017 gives you the “love at first touch” sensation, while SQ‑SE 8020 gives you the “all‑day online” peace of mind.

Application Scenarios and Safety Considerations

SQ‑SE 8020 finds wide application, especially in:

• Sunscreen products – improving water/sweat resistance and helping boost SPF
• Colour cosmetics – foundations, cushions, BB creams, CC creams, etc.
• Insect repellent products, among others.

In foundation formulations, the recommended dosage as a film former is typically 1%–15% by weight, to be adjusted according to the specific system.

Regarding safety, the EWG rates VP/Hexadecene Copolymer as LOW risk across cancer, allergy/immunotoxicity, and developmental/reproductive toxicity, and the CIR Expert Panel has also confirmed its safety. However, for very oily or acne‑prone skin, film formers may pose a comedogenic risk, so formulators are advised to conduct skin tests and communicate transparently with consumers.

SQ‑SE 8020 – The Key Enabler of Long‑Lasting Foundation Performance

Consumers’ foundation pain point has never been “my foundation lacks VP/Hexadecene Copolymer,” but rather “why does my makeup become patchy and dull by afternoon?”

SQ‑SE 8020’s answer is: because it “locks” your makeup in place.

No dullness, no fallout, no fear of sweat, no fear of rubbing, no sedimentation – this is the “long‑wear freedom” that consumers truly want. And SQ‑SE 8020 (VP/Hexadecene Copolymer) is the key enabler of that freedom. When SQ‑SE 1017 makes the foundation “stunning upon application” and SQ‑SE 8020 keeps the makeup “online all day” – this golden combination is the ultimate answer to the “invincible foundation.”