(41 reviews)


In-stock. Note to International Customers: Your country may impose an import/customs fee on TIGHTEYE. While we cannot foresee whether or not this will occur definitively, no funds from this fee are paid to ScienceSerum™

TIGHTNECK™ helps to tighten, firm and lift loose skin while improving skin tone, resiliency and elesticity.

TIGHTNECK™ Clinical Anti-aging Neck Serum is a rapidly-penetrating, lightweight SmartGel™ scientifically formulated with key anti-aging ingredients Hyaluronic Acid, Vitamin C, Bio-peptides, Green Caviar Extract, Caffeine and Argireline.

How does TIGHTNECK™ work?

Upon application, TIGHTNECK is heated by your body's natural temperature, triggering the absorption of key anti-aging ingredients by your skin. At the same time you will feel TIGHTNECK contract on the surface of your skin, providing you with immediate tightness. The combination leaves you with results you can see and feel in 5 minutes*. After your treatment gently wipe TIGHTNECK from your skin with a damp cloth. NOTE: On average it will take 5 minutes for the serum to dry; your treatment is not fully done until the serum has completely dried on your skin. At times this can take more than 5 minutes (8-10 minutes) depending on your body's natural temperature. 

How is TIGHTNECK™ different from TIGHTEYE?

The skin around the eye area is very thin and delicate whereby loose skin on the neck is thicker. While both products utilize the same technology, TIGHTNECK™ is scientifically formulated to be THREE TIMES STRONGER as TIGHTEYE plus contains three different types of Hyaluronic Acid. Given it is a stronger mixture, you SHOULD NOT use TIGHTNECK™ on delicate eye skin, nor should you use TIGHTEYE™ on the neck area as it requires a stronger formula for proper results.

What is SmartGel™ and is if 100% safe?

SmartGel™ is a liquid which responds to heat in an extremely precise way. Our propriety patented SmartGel™ is 100% safe, non-toxic, fragrance-free and paraben-free.

Does any other anti-aging product on the market contain SmartGel™?

Aside from TIGHTEYE, TIGHTNECK is the only product on the market currently using it and its technology. 

How do I use TIGHTNECK?

Apply a generous amount of TIGHTNECK™ to your neck and upper chest area. DO NOT PAT SERUM ON! Do not be afraid to rub it into the skin, thus resulting in a substantial layer. Leave on for 5 minutes or until the product has visibly dried on the surface of your skin. At the end of your treatment gently wipe TIGHTNECK™ off completely with a damp towel. It is important to remove all product from your skin after your treatment as the gel is not meant to be left on the skin.

How does TIGHTNECK™ work in just 5 minutes?

We have scientifically-formulated TIGHTNECK™ to respond to the temperature of your body at a rapid rate by way of our propriety patented SmartGel™ technology. Please note that due to your body's natural temperature, drying time may take anywhere between 5 and 10/12 minutes. DO NOT WIPE OFF your treatment before the serum has fully dried on your skin.

What are the ingredients in TIGHTNECK™?

Hyaluronic Acid, Vitamin C, Bio-peptides, Green Caviar Extract, Caffeine and Argireline:

  • Hylauronic Acid nourishes and hydrates collagen which gives skin its firmness. Hylauronic Acid keeps the collagen moist and elastic. It also acts as a space filler by binding to water and keeping the skin wrinkle-free.
  • Vitamin C is an anti-oxidant that slows the rate of free radical damage. Free radicals are unstable molecules that damage collagen and cause skin dryness, fine lines, and wrinkles.
  • Bio-peptides are necessary for the skin to increase hydration to the collagen around the eyes. Bio-Peptides come into action to give collagen a boost. They also partner with amino-acids which are useful in the retention of skin moisture. Bio-Peptides increase circulation around the eyes. Circulation is essential in giving your eyes a healthy, vibrant and youthful appearance.
  • Green Caviar Extract has been proven to lessen key signs of aging: Skin dullness, fine lines, wrinkles, sagging and hyperpigmentation (darkening of the skin) while keeping the skin moisturized. Green Caviar Extract speeds up the natural production of collagen around the eyes by 67%. It is also rich in vitamins and has been shown to slow down the aging process by moisturizing the skin. Caviar Extract firms your skin and provides the highest possible level of hydration.
  • Caffeine contains antioxidants, which help 'perk up' your complexion. Caffeine's ability to constrict small blood vessels and reduce inflammation is an asset in a number of products designed to minimize dark circles and sagging skin under the eyes. These same anti-inflammatory qualities serve caffeine well as an ingredient in cellulite creams, where caffeine's ability to cause dehydration is put to good use drawing excess fluid from fat cells to improve the skin's appearance.
  • Argireline is the first peptide to reduce wrinkles and expression lines. When applied topically, it alters biochemical pathways involved in muscle contraction so that facial muscles can't contract with as much force. By doing this, it reduces the appearance of dynamic wrinkles. Wrinkles that are visible when smiling or frowning become less noticeable.

Are there any other ingredients in TIGHTNECK™?

TIGHTNECK™ is a patented, proprietary beauty product. Aside from the ingredients listed above the only other items in our product are water and our SmartGel™ base (serum) which is 100% safe, non-toxic, fragrance-free and paraben-free.

Do you test your products on animals?


Is TIGHTNECK fragrance and paraben-free?


Is TIGHTNECK™ safe to use on acne prone or oily skin?

Yes, it is for all skin types; there is nothing in TIGHTNECK™ that will be harmful to the skin.

Can I use more than one coupon code per purchase?

No, you can only use one coupon code or discount code per purchase. 

I received TIGHTNECK™ but serum is not pumping from the bottle. Why is this?

TIGHTNECK™ is formulated to become a solid when it comes in contact with heat (your body's natural temperature will heat the product and within about 5 minutes it will dry on the skin). If you live in a very warm or hot climate and upon receipt of your product no serum is pumping out please put it in your refrigerator for 30 minutes at which point it will turn back into a liquid and will be ready for use. If you are still having trouble with the bottle please email us at info@scienceserum.com

Do you offer a Money-back Guarantee?

Yes! If you are not happy with your product simply send it back to us within 30-days for a full refund less $10.00 for S&H. Please note: No more than 1/4 of the serum should be removed from the bottle in order for your return to be accepted. Please send TIGHTNECK™ back to us with a copy of your confirmation order email and/or your order number to:

194 John B. Scott Blvd.
Norton, MA 02766
Apply a dime-size amount of TIGHTNECK™ to the neck area. Leave on for 5 minutes OR until serum has completely dried on the skin; it will feel like a very thin layer of tape. DO NOT PAT SERUM ON; apply a generous layer of serum and do not be afraid to rub into skin. At the end of your treatment wipe gel off with a damp towel. It is important to remove all product from your skin after your treatment as the gel is not meant to be left on the skin.

TIGHTNECK™ Serum Reviews

Based on 41 reviews

Tight Neck

Posted by Dawn on Mar 20th 2018

This has become a game changer for me! I have found the one product that will take years off my look...years! Your neck will give a beautifully pampered face away. This has fired my neck and the longer I use it the better it works. I will always have a back up

Tight Neck

Posted by Linda Lopez on Mar 8th 2018

I’m always skeptical on these types of products, however, I really do notice a difference after using for five days. I don’t believe any product can perform miracles, but this one has definitely helped with giving a smoother look and feel. The sagging has improved as well. I would recommend this product.

Tight Neck is tight

Posted by Shannnnon on Mar 2nd 2018

The first time I used this product on my neck I noticed an immediate improvement in the texture of my skin under my chin- it was smooth, felt moisturized and definately looked 'tighter'. I am just wrapping up week one and I notice less improvement over the course of the week but will continue to use. Still giving it 5 stars.

TightNeck Serum

Posted by Mary Kay Wallace on Feb 28th 2018

The TightNeck serum is wonderfully effective. I apply it in three pumps from the lower part of my neck upwards toward my chin in one continuous movement. Then, I sit still until the serum dries to a white film. It takes between 5-10 minutes to fully dry. To rinse, I use warm/cool water and my fingertips to remove the serum. Following, I use a wet towel to remove any remaining product. If you can still feel a sticky residue, it's not entirely removed. Try a soaked cotton pad to clean fully.

After one week of daily usage, a friend asked me if I'd lost weight. She remarked that my face look thinner! I'm sold.

I Love this product!!!!

Posted by Shannon Starrenburg on Feb 26th 2018

I can definitely tell a difference in my neck, right after using this product!!! My neck lines are GONE!!!! This is an AWESOME product....it makes me feel pretty!!!! However, I did only give 4 stars, because I do not know how well it does long-term....I will just have to wait and see!!!!

Tight Neck

Posted by Julie B on Feb 22nd 2018

I’ve only been using this a short time but I can see and feel a difference in my skin and wrinkles. It’s costly, but one actual product that works. I can see a visible difference.

Tight Neck

Posted by Dawn on Feb 20th 2018

This has become my holy Grail! The longer I use this the firmer my neck gets, ladies this is worth every penny so run don't walk just leave me one


Posted by Unknown on Jan 8th 2018

Very please with this product. I have enjoyed a dramatic decrease in the "crepiness" on my neck. I also note that I suffer from moderate to severe acne and this product does not irritate my skin nor cause any breakouts.

Great products

Posted by Miliru1950@gmail.com on Dec 18th 2017

Im 67 years old,feel a lot better about my neck...Great product,thanks.