Sensitive, reactive skin? If you throw good money after bad, trying to resolve symptoms with products that just don’t work, the problem probably isn’t the products—it’s your skin barrier. Because you can’t resolve the symptoms of sensitive skin if you don’t start at the barrier. We’ll show you how.
CHEMIST-FORMULATED
DERMATOLOGIST-TESTED
DESIGNED FOR SENSITIVE SKIN
NON-IRRITATING INGREDIENTS
VEGAN & CRUELTY-FREE
MADE IN CANADA
PRESS + RECOGNITION
VITA Magazine · British Vogue · Canada’s Small Business 100 2026 Nominee
Shop the System
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THE BARRIER [RE]SET
Six formulas. Two weeks. The beginning of a better barrier.
Try the complete TSOS™ system for just $39.
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![The Barrier [Re]Set](http://tsos.ca/cdn/shop/files/Get-The-Shot-Studios-Photography-by-Mark-Whitehead-13.jpg?v=1786660322&width=2500)
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THE TSOS™ SYSTEM
A barrier-first skincare system
Formulated by a Professional Chemist for sensitive skin and barrier dysfunction, the TSOS™ system was developed with just six barrier-first formulas: Two serums, two treatments, and two moisturizers. Stack all six for a complete AM/PM skincare routine, or layer in only the formulas your skin needs.
What are your skin concerns?
Why TSOS™?
Because skincare doesn't work without science.
Chemist Formulated
Science-Backed
Barrier Supportive
Safe for Sensitive Skin
Results-Driven
Five-Star Reviews
“Results in the first week—love that glow!”
—Scott Lyon
“Deeply moisturizing and non-irritating.”
—Georgia Tucker
“Made my skin feel unreal.”
—Amanda Hoeschle
“Truly amazing stuff.”
—Sarah Ludwar
“Worth the investment!”
—Ell Acorda
Learn
The science of skin[care]
Learn about the science of barrier dysfunction—and the active ingredients your skin needs.
How To Build A Skincare Regimen
A good skincare regimen does not need to be complicated. In fact, for many people — especially those with sensitive, dry, reactive, or easily overwhelmed skin — the most effective routine is often ...
Read more
Sensitive skin is often described as skin that feels easily overwhelmed. It may sting after applying a product. It may flush when the weather changes. It may feel tight after cleansing, itchy after...
Read more
What happens to my skin when I go on or off birth control?
Skin can change when your hormones change. For some people, starting hormonal birth control leads to clearer, calmer-looking skin. For others, skin may feel more congested, oily, dry, sensitive, or...
Read more
OUR STORY
Chemist-formulated skincare since 2020
Founded by a Professional Chemist with 15+ years of experience researching and developing skincare, TSOS™ is The Science of Skincare™: Clinically proven ingredients and dermatologist-tested treatments formulated for barrier dysfunction, safe for sensitive skin, and effective for everyone.
Start at the barrier.