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TIRTIR SOS Serum
Prime eligibleTIRTIR

TIRTIR SOS Serum

4.5· 1,430 reviews
$17.5013% OFF
NEAR90-DAY LOW
LIMITEDHISTORY

Usually $20.00

Price checked today at 13:10 CT

Deal ends in 6d 21h

Achieving that sought-after glass-skin glow often feels like a multi-step chore, but this serum simplifies the process by merging deep hydration with a natural, dewy finish.

Verified by Agora · Price and availability shown are accurate as of the date/time indicated and are subject to change. Any price information displayed at the time of purchase on Amazon will apply. As an Amazon Associate, Agora earns from qualifying purchases.

Today's verdict
Fair price today

Near 90-Day Low

Deal confidence

What we've verified about this price

Current
$17.50
Typical
$20.00
90-day low
—
90-day low
Matches the lowest price we've tracked
NEAR90-DAY LOW
LIMITEDHISTORY
Price-tracked daily by AgoraPrice checked today at 13:10 CT
Agora's take

Our read on this product

Most serums either focus on clinical repair or simple moisture, but this one bridges the gap by acting as both a deep hydration treatment and a functional makeup primer. Because it uses polyglutamic acid, it holds onto water more tenaciously than standard hyaluronic formulas, leaving the skin feeling plumped rather than just damp. It absorbs cleanly, which is why you can layer it under foundation without dealing with the pilling or tackiness that often ruins a morning routine.

You will likely find yourself reaching for it on days when your skin looks particularly tired or dull, as the formula is designed to impart a subtle, glass-like glow immediately upon application. Since it is fragrance-free and formulated to be gentle, it avoids the irritation that often comes with high-potency serums, making it a safe addition to a routine that already includes active treatments or sensitive-skin care.

Why this one

What makes it stand out

  • Polyglutamic acid base provides a higher water-retention capacity compared to standard hyaluronic acid serums.
  • Acts as a functional makeup primer, whereas many hydrating serums are strictly skincare-focused and can cause makeup to slide.
  • Fragrance-free, non-sticky formulation specifically engineered for daily use under base makeup.
What owners notice

Real-world notes

  • Absorbs cleanly into the skin without leaving a tacky or sticky residue behind.
  • Provides a noticeable, immediate smoothing effect that makes foundation application feel more seamless.
  • Works well as a standalone hydrator for those who prefer a minimalist, one-step morning routine.
  • The texture is lightweight enough to layer easily with sunscreens or other skincare products.
Bottom line

Pick this up if you want a single morning step that hydrates deeply while creating a smooth, radiant canvas for your makeup.

Price history

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$17.5013% OFF
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