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Hello,
This is Dr. M from OTCM, your OTC Sun Care Specialist.
Clean Beauty, Mineral Sun Care.
These are currently the two most powerful keywords in the sun care market for
sensitive skin. As consumer anxiety surrounding chemical (organic) filters rises,
the formula "100% Mineral = Gentle" has gained absolute trust among
consumers.
However, recent discussions across US beauty media and consumer communities are
beginning to shake this trust. The cause? A growing number of products labeled
"100% Mineral" have been found to contain Butyloctyl Salicylate (BOS). While BOS
is officially listed under INCI as a skin conditioning agent, its chemical structure
closely mirrors that of organic UV filters. In other words, a product could be
secretly
getting an SPF boost from an ingredient that was never declared as a sunscreen
filter in the first place.
The controversy doesn't end there. Consumers are now asking a critical follow-up
question: "If BOS is added to mineral products, does it introduce potential
irritants for sensitive skin?"
How should we address this crack in consumer trust?
Today, OTCM presents our definitive answer: The 100% Mineral Tinted Sun Serum.
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point 1
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Why Have Mineral Sunscreens Relied on Chemical Boosters?
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Mineral UV filters exist as discrete physical particles. When applied to the skin,
gaps naturally form between these particles, allowing UV rays to penetrate.
Historically, the industry has tackled this issue in one of two ways :
1. Adding Chemical Boosters:
Incorporating organic boosters like BOS in small amounts to
chemically fill the gaps between mineral particles.
2. Overloading Mineral Filters:
Heavy-loading mineral filters to minimize the gaps. While this
narrows the spacing between particles, it severely compromises
user experience—resulting in a heavy white cast and a stiff, chalky
application.
Both methods continuously circle the same dilemma: How much material is needed to
plug the gaps? Ultimately, neither approach fundamentally solves the white cast
issue without sacrificing texture.
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point 2
The OTCM Innovation — Gap-Free Mineral Filter Tech
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OTCM rejected both chemical boosters and excessive filter loading. Instead, we
approached the problem through particle engineering: blending multi-sized mineral
filters so that varying particle sizes naturally fill the open spaces.
By utilizing a multi-sized mineral filter complex, smaller particles fit seamlessly
into the voids created by larger particles. This naturally increases packing
density without boosting UV filter concentration—creating a dense, continuous
shield.
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Non-Agglomerating
Particle Distribution
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Mineral filters naturally tend to clump together. OTCM’s surface-treated filters
resist agglomeration, allowing particles to re-align evenly across the skin.
By focusing on smarter particle arrangement rather than adding more filter volume,
OTCM minimizes white cast at its root while achieving high-performance UV defense.
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point 3
SkinFit Tech — Adhesion Over Thickness
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Traditional tinted mineral sunscreens face issues at two stages:
1. They require thick pigment layers to cover up the chalky white cast of the
base.
2. This heavy layer mixes with sweat and sebum, resulting in caking, creasing, and
uneven fading over time.
The very tint intended to correct skin tone ends up looking unnatural.
OTCM reengineered this process:
Less to Hide,
Thinner to Wear
Because our Gap-Free base minimizes white cast, there is no need for
heavy pigments. The result is a sheer, luminous, and natural tone
correction.
Seamless
Adhesion via SkinFit Tech
OTCM’s proprietary SkinFit Tech forms a thin, uniform film that follows
the skin’s micro-relief. This lightweight film locks both UV filters
and pigments in place, providing long-lasting coverage and sun
protection without feeling heavy.
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point 4
59% Soothing Skincare Ingredients for Sensitive Skin
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Conventional tinted physical sunscreens often contain high powder loads that dry
out the skin, which can lead to further irritation. OTCM solves this by formulating
59% of the total blend with skin-nourishing skincare ingredients:
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Point 5
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Creating a true 100% mineral sunscreen requires more than blending trendy
ingredients. It demands a fundamental understanding of how consumers perceive
mineral filters, why white cast occurs, and how pigment interacts with the base
layer.
At OTCM, we manage the entire lifecycle in-house—from raw material design and
formulation development to rigorous safety testing.
This enables us to deliver a 100% mineral formulation free of chemical SPF boosters
or heavy pigment layers—achieving high SPF protection, superior texture, instant
soothing, and long-lasting tone correction, all fully compliant with stringent US
OTC standards.
We turn consumer concerns into products backed by solid science.
That is why leading brands choose OTCM.
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