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K18

K18 AstroLift™ Reparative Volume Spray, 2-Day Hair Thickening + Hold For Thin, Fine, Fragile Hair, Non-Sticky, Non-Crunchy, Humidity-Resistant Volumizing Spray

  • Based on 922 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Oct 21
Order within 7 hours and 18 minutes
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Size: 4 Fl Oz


Description

Will it cause crunchiness or stickiness? No, this lightweight, non-sticky formula provides flexible lift + hold without leaving hair sticky, crunchy, or weighed down. For best results, apply 4-6 inches away from hair and scalp. *k18hair.com/disclaimers Can I reapply it every day? You can reapply this buildable volume booster every day, but the 2-day style memory means you can skip re-application, and still get interdimensional lift. *k18hair.com/disclaimers When do I use it in my routine? AstroLift can be applied AFTER all K18 products, including the mask + oil, to finish your style on towel-dried or dry hair. You can also apply products on top of our buildable AstroLift formula without weighing hair down. *k18hair.com/disclaimers Is AstroLift activated by heat? No, you can get 2.5x more* all-over volume* without using heat. Formulated to work no matter how you style your hair, this will help minimize heat + mechanical damage during styling *k18hair.com/disclaimers Do I have to wait 4 minutes after applying AstroLift for damage repair? Yes, for best repair results, wait 4 minutes after application. AstroLift Volume Spray Damage Shield Shampoo Molecular Repair Hair Oil Detox Shampoo Molecular Repair Mask Damage Shield Conditioner AirWash Dry Shampoo

Product Dimensions ‏ : ‎ 1.57 x 0.07 x 6.1 inches; 0.35 ounces


UPC ‏ : ‎


Manufacturer ‏ : ‎ K18


Best Sellers Rank: #4,069 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #48 in Hair Sprays


#48 in Hair Sprays:


Customer Reviews: 4.3 4.3 out of 5 stars (922)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • I've been using it for over a year, you should use it too.
Size: 4 Fl Oz
I have been using this product for just over a year. It's fabulous. All of k18 products are more than meets the eye. It repairs your hair at a molecular level while leaving it thicker and so soft. So easy to use, just a few sprays and the fragrance is intoxicating...everyone comments. So this summer treat yourself to K18 AstroLift a feel the difference, it's like a moisturizer for your hair, no stickiness or dryness...just soft and luxurious. Your hair will thank you. ... show more
Reviewed in the United States on July 2, 2026 by Amazon Customer
    • Perfect product.
Size: 4 Fl Oz
This stuff is amazing! I’ve tried so many products that claim to give body and lift to my really fine hair by K18 is the only one that actually delivers the kind of body I was looking for. Clean, shiny and smooth. I love it. Ordered the travel and large size. It’s great for wet hair or for dry.
Reviewed in the United States on June 7, 2026 by P Taylor
    • Omg I love this & it smells amazing
Size: 1.6 Fl Oz (Pack of 1)
This is a great product for me. I have long, fine , straight hair that I always air dry. I love that I can use it on damp or dry hair and it’s a volumizing spray you don’t have to blow dry. Makes my hair look thicker and more voluminous. Also, the scent is amazing, I would literally buy it in a perfume lol. Got the small size first to try, definitely getting the full size when it’s out. ... show more
Reviewed in the United States on July 10, 2026 by Rachel
    • K18 Astro-Lift Spray
Size: 4 Fl Oz
This has proven to be one of my most favorite products. I use this daily after my daily routine, spray on wet hair, work it through then blow dry. My hair texture has changed and is more manageable. The smell of the product is just enough to smell good but isn’t overpowering at all. Every third day I add K18 leave in conditioner to this step for added protection. My hair has never been healthier. ... show more
Reviewed in the United States on July 25, 2026 by byron richards
    • Part styling, part hair repair treatment - LOVE results.
Size: 4 Fl Oz
Admittedly, and probably like others, first use felt a bit lackluster (but keep reading), as I was expecting more of a styling product to give me super 'vavavoom' volume. This product is not that - however after a few uses and understanding this unique product more, I love it. This product contains the K18 peptide, so its important to spray all over damp hair, and leave on for at least 4 minutes to allow for their peptide to fully 'sink in'. After styling, the result is not that over-thick, sticky, frozen hair feel - its definitely a very clean feeling, healthy hair bounce, with absolutely zero residual feeling in the hair - which is amazing for fine, thin, frizzy, or curly hair. It may just be me / placebo, but it seems the resulting volume continues to improve with more use. For now - I'm enjoying the product now that I understand the intended results. I'll need to see how long the bottle lasts to determine if its worth the cost. Not sure if this spray (daily) could effectively replace the original K18 product (weekly) - that could be the net cost saver based on how this continues to go. For now, its a keeper for me. ... show more
Reviewed in the United States on August 14, 2025 by JLash
    • Given life to my fine hair
Size: 4 Fl Oz
This spray has become a staple in my hair care routine, and I genuinely notice the difference every time I use it. The K18 AstroLift Reparative Volume Spray gives my hair a light, lifted look that lasts throughout the day without feeling stiff or sticky. I have fine hair that tends to fall flat quickly, but this product adds volume in a way that still feels natural when I run my fingers through it. The scent is pleasant and subtle, and it blends well with other products I use without clashing. What really stood out was how this spray improved the overall texture and resilience of my hair. After a few weeks of consistent use, my hair feels stronger and less prone to breakage. I used to notice frizz and lifeless strands by mid-afternoon, but the lift and body this spray provides stays intact for two days as advertised, even through workouts and humid conditions. I appreciate that it supports healthier hair over time rather than just giving temporary fullness. It has genuinely elevated my styling routine and made daily hair care feel easier and more effective. ... show more
Reviewed in the United States on February 13, 2026 by Lauren Y.
    • Effective, but it leaves a strong, chemical smell
Size: 4 Fl Oz
This works! It’s effective as a dry shampoo, and adds volume…but it leaves an oddly chemical smell that lingers throughout the day. It’s not a flattering fragrance, which kind of defeats the purpose of getting my hair looking and feeling better. I don’t want to smell like a strange jumble of chemicals, so I’d prefer if it were fragrance-free ... show more
Reviewed in the United States on August 1, 2026 by Amazon Customer
    • This is AMAZING!!!
Size: 4 Fl Oz
I have used many brands of volumizer for my short, fine hair and this is BY FAR the best. While my hair is fine, I have a lot of it and it is hard to style and control. This product gives my hair volume without being heavy or sticky, gives shine, and bounce and just makes my difficult hair look amazing. It is pricey but totally worth it! ... show more
Reviewed in the United States on August 12, 2026 by Pdub

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