Why ‘Mild and Gentle’ Shouldn’t Just Be Marketing Words—And How Yein&Young Proves It
Not All Mild Products Are Created Equal: Why Yein&Young Earned the Claim
In skincare, the words mild and gentle appear often. They whisper promises of calm, of comfort, of safety for sensitive skin. But these terms are not always backed by evidence—and when skin reacts, marketing isn’t enough.
At Yein&Young, these labels are not printed casually. They are clinically substantiated through rigorous testing on human subjects with sensitive skin. Because in the most vulnerable moments—post-surgery, during pregnancy, through eczema, or simply when sensitivity flares—what matters most is truth, not trend.
What “Mild” Actually Means in Skincare
The term mild refers to a product’s ability to cleanse or hydrate without irritating or disrupting the skin’s barrier. But in the skincare industry, there are no strict regulations on its use. That means any brand, regardless of testing, can claim to be gentle.
What sets Yein&Young apart is that the mildness of its formulations isn’t just assumed—it’s proven.
The Clinical Standard: Repeat Insult Patch Testing (RIPT)
To prove a product is truly mild, dermatological testing must be done. Here is an example...
Yein&Young’s Organic Hair Shampoo Unscented (A13) underwent a 21-day Repeat Insult Patch Test and Challenge Test—one of the most respected global protocols for measuring skin reaction.
📍 Tested by: Skin Tree Center (Philippines)
📍 Supervised by: Dr. Gertrude P. Chan, M.D., M.Sc., FPDS
📍 Conducted on: 35 volunteers with confirmed sensitive skin types
📍 According to: COLIPA Guidelines and the Declaration of Helsinki
What the Tests Showed:
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Primary Irritation Index (PII) after 21 days:
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Yein&Young A13: 0.61
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Sodium Lauryl Sulfate (positive control): 1.39
⮕ Conclusion: Significantly milder than known irritants.
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Challenge Sensitization Test (3 cycles):
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Yein&Young A13 sensitization rates: 9%, 9%, and 11%
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Any product with two tests under 14% is considered low-risk
⮕ Result: Clinically “mild and non-sensitizing.”
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These results allow Yein&Young to rightfully claim that its hair shampoo—and by extension, its formulations built on the same philosophy—are mild, gentle, and hypoallergenic. And that is just one example...
Why It Matters for You
Most people with sensitive or easily reactive skin or scalp don’t need “miracle” products. What they need are products that don’t make things worse.
Yein&Young products—like the Fragrance-Free Castile Soap, Soothing Natural Lotion and Shampoo—are built with:
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No harsh surfactants
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No artificial fragrance or essential oils
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No parabens, sulfates, or drying alcohols
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pH-balanced and moisture-supportive formulations
- No synthetic ingredients
By choosing mild, skin-compatible products, you’re choosing prevention over correction—protecting your skin barrier before it breaks down.
Beyond Marketing: A Brand That Walks Its Talk
Yein&Young doesn’t rely on buzzwords. It doesn’t claim “dermatologist-tested” without data. Every “mild and gentle” claim is backed by published, reviewed, and signed clinical trial documents.
And that matters—because true gentleness isn't what a brand says about itself. It's what the skin says back.
