SKU: 67974231200

5% Mandelic Acid Serum

Sale price$168.75 Regular price$187.50
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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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Description

5% Mandelic Acid SerumWHY WE LOVE IT Gently smooth and refine your skin with the Nine Less 5% Mandelic Acid Serum. Formulated with 5% Mandelic Acid (AHA), this mild yet effective exfoliating serum works on the surface of the skin to dissolve dead cells, unclog pores, and improve texture without the irritation common to stronger acids. Mandelic acids larger molecular size makes it ideal for sensitive or beginner users, or acne prone skin, helping to brighten dullness, fade

WHY WE LOVE IT

Gently smooth and refine your skin with the Nine Less 5% Mandelic Acid Serum.

Formulated with 5% Mandelic Acid (AHA), this mild yet effective exfoliating serum works on the surface of the skin to dissolve dead cells, unclog pores, and improve texture without the irritation common to stronger acids. Mandelic acid’s larger molecular size makes it ideal for sensitive or beginner users, or acne-prone skin, helping to brighten dullness, fade dark marks, and support a clearer, more even complexion over time.

The formula is supported by soothing and hydrating ingredients that help maintain balance and keep skin calm while exfoliation takes place. With consistent use, skin looks smoother, clearer, and fresher, and other skincare products absorb more effectively.

This is Level 3: Balanced Exfoliation according to Nine Less's rating system. Can be used daily if you've used acids before; otherwise start at every second day or less frequently if you have sensitive skin.

30ml

What it does: Gently exfoliates dead skin cells, smooths texture, refines pores, brightens dull tone, and helps fade post-acne marks with minimal irritation.

Who it’s for: Perfect for beginners, sensitive skin, combination or acne-prone skin, and anyone wanting a gentler chemical exfoliant that still delivers visible smoothing and brightening results.

INGREDIENTS

Aqua (Water), Butylene Glycol, Mandelic Acid, Propanediol, Glycerin, 1,2-Hexanediol, Sodium Hydroxide, Xanthan Gum, Sorbitol, Panthenol, Allantoin, Polyglyceryl-10 Laurate, Sodium Hyaluronate, Ethylhexylglycerin, Disodium EDTA, Citric Acid

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67974231200

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4.7 ★★★★★
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Verified Purchase
JustAGeek
Massapequa, US
★★★★★ 5
It works like magic, saved me $150.
Size: 2 fl oz
I filled 1/4 tank of gas into my snowblower which I could not started, sprayed about 15 seconds of Start Your Engines, rock snowblower to mix well, let it sat for an hour. I pulled string and yet couldn't start engine. Unscrewed spark plug and spray some into cylinder, put the spark plug back and pull the string. ENGINE STARTED!!! SAVED ME AT THE LEAST $150.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
B
Verified Purchase
Bear
Lowell, US
★★★★★ 5
Great
Size: 2 fl oz
Great
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Reviewed in the United States on May 22, 2026
B
Verified Purchase
Brandonian
Massapequa, US
★★★★★ 1
Flimsy Nozzle
Size: 2 fl oz
The nozzle is so flimsy at the moment I pressed on it it popped off the can into the gas tank. I didn’t press it softly but I also didn’t press it very hard either, getting it out was a huge pain in the butt.
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Reviewed in the United States on May 24, 2026
J
Verified Purchase
John
New York, US
★★★★★ 5
Good product
Color: Blue, Number of Items: 1
I like the product and it works as advertised
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Reviewed in the United States on February 16, 2026
J
Verified Purchase
John H.
Bozeman, US
★★★★★ 5
Keeps your engines running right.
Color: Blue, Number of Items: 1
Works great. I've had less trouble , mosty excellent performance with my small power tools and yard equipment since I've been using this and other Stay bil products.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2026

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