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- USA
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Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Nitrous Express N2O Flo-Thru Pressure Gauge (0-1500 PSI) 4AN (15509)Includes a high accuracy nitrous pressure gauge and a billet aluminum manifold that has two 1 8 npt ports allowing you to connect the nitrous gauge as well as another 1 8npt accessory in line with a 4AN line. Features: High quality at an affordable price Expertly made from premium materials Built to match your exact requirements Nitrous and Water Methanol Instructions
Includes a high accuracy nitrous pressure gauge and a billet aluminum manifold that has two 1/8 npt ports allowing you to connect the nitrous gauge as well as another 1/8npt accessory in-line with a 4AN line.
Features:
Nitrous and Water/Methanol Instructions
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 1271 reviews
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Product Reviews
★★★★★ 3
It's okay.
Color: PDRN 25%
I'm not going to say it's good I'm not going to say it's bad, I do not like the sticky feeling you have to wash your hands afterwards. And it feels sticky on your face for a while I used it about 10 minutes after microneedling my face. It did help my face feel better kind of calm it down a little bit. When I applied it it didn't burn or nothing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
★★★★★ 5
Great product
Color: PDRN 25%
Game changing product. It makes less expensive stuff feel like luxury. I love it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
★★★★★ 5
Great booster to mix with other products — long-term results are real
Color: PDRN 25%
The Salmon DNA PDRN 250,000 ppm Concentrate Booster works amazingly well when mixed with other skincare products. I often add a few drops to my cream, essence, or even a mask, and it blends in smoothly without changing the texture. It’s super versatile and easy to incorporate into any routine.
At first, I didn’t notice a dramatic change right away, but after consistent use, I can definitely see a difference. I’m already on my third bottle since I started using it back in Korea, and my skin texture has improved a lot. The bumps and unevenness have noticeably reduced, and my skin feels much smoother and more refined now.
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Reviewed in the United States on October 23, 2025
★★★★★ 5
Results after a few uses. ✨
Color: PDRN 25%
There’s a little bit of magic in this bottle. I’ve applied directly to skin, let it soak in for a few minutes, then follow with moisturizer with no issues. Already seeing subtle softening and fluffing of lines after a few uses. Excited for this one. Thank you!
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Reviewed in the United States on December 28, 2025
★★★★★ 5
Helped Tighten My Skin & Minimize Pores
Color: Cyano Pink Spicule, Color: Cyano Pink Spicule
I’ve loved the Dr. Melaxin Cyano Pink Spicule Serum! The bottle is small, but it lasted me around 6 months since I only use one pump every other night. When I first started using it, I noticed a tingling sensation, but over time my skin adjusted and I barely notice it now. I’ve definitely seen my pores appear smaller and my skin feels tighter and smoother after using it.
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Reviewed in the United States on May 26, 2026
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