Have you ever wished for a skincare ingredient that could temporarily smooth expression lines with a mechanism inspired by nature, yet is safe and synthetically produced for cosmetic use? Enter Dipeptide Diaminobutyroyl Benzylamide Diacetate, widely known by its trade name Syn-Ake®. This innovative synthetic peptide has become a star ingredient in anti-aging formulations, promising a non-invasive approach to reducing the appearance of wrinkles.
But what exactly is it, and how does it work? This guide dives into the science, benefits, and safety of this fascinating molecule to help you understand why it's featured in so many advanced Syn-Ake serums and creams.
Decoding the Name: A Synthetic Tripeptide
While its chemical name sounds complex, the concept is straightforward. It is a synthetic tripeptide, meaning it is a chain of three amino acid-like building blocks, meticulously designed in a laboratory.
- Dipeptide Diaminobutyroyl Benzylamide Diacetate is its standard chemical name.
- INCI Name: The International Nomenclature of Cosmetic Ingredients (INCI) name, which you'll find on product ingredient lists, is DIPEPTIDE DIAMINOBUTYROYL BENZYLAMIDE DIACETATE.
- CAS Number: Its unique chemical identifier is 823202-99-9.
- Common Aliases: You will most often see it marketed as Syn-Ake®, or referred to as "snake peptide" or "wrinkle-relaxing peptide".
It is supplied as a white to off-white powder that is soluble in water, making it suitable for a wide range of cosmetic formulations, from lightweight Syn-Ake serums to rich creams.

The Science of Action: How Does Syn-Ake Work?
The "Ake" in Syn-Ake offers a clue. It is a synthetic analogue designed to mimic the effect of a peptide found in the venom of the Temple Viper (Tropidolaemus wagleri)[2]. But crucially, it is not a toxin-it's a safe, synthetic copy of a specific wrinkle-smoothing mechanism.
Primary Mechanism: Muscle Relaxation
The peptide's primary and most well-understood action is as a reversible competitive antagonist of muscle-type nicotinic acetylcholine receptors (nmAChR).
- During facial expressions, nerves release a signal molecule called acetylcholine.
- Acetylcholine binds to receptors on muscles, causing them to contract and form dynamic wrinkles (like frown lines or crow's feet).
- Syn-Ake competitively binds to these same receptors, acting like a protective shield on the muscle.
- This temporarily blocks acetylcholine from binding, leading to a relaxation of the underlying facial muscles and a softening of the overlying skin's wrinkles.
Beyond Relaxation: Potential Anti-Aging Pathways

Emerging research suggests its benefits may extend beyond simple muscle relaxation. A 2023 computational and in vitro study published in the Journal of Biomolecular Structure and Dynamics indicates that Syn-Ake may also interact with key biological targets involved in skin aging[1]:
- Inhibition of MMPs: It showed potential to bind to and inhibit Matrix Metalloproteinases (MMPs), particularly MMP-13. These enzymes break down collagen, and their overactivity is a major cause of skin aging and sagging.
- Activation of SIRT1: The study also suggested stable binding to Sirtuin 1 (SIRT1), a "longevity protein" involved in cellular repair and protection[1].
- Antioxidant Activity: The same research confirmed that Syn-Ake exhibits concentration-dependent antioxidant activity, helping to neutralize free radicals that contribute to skin aging[1].
This multi-target potential suggests Syn-Ake's action could be a combination of immediate wrinkle-smoothing (muscle relaxation) and longer-term anti-aging support (collagen protection, cellular health).
Evaluating the Evidence: What Do Studies Say?
The body of research on Syn-Ake includes both mechanistic studies and efficacy evaluations:
- In Silico & In Vitro Research: The aforementioned 2023 study used molecular docking and dynamics simulations to predict Syn-Ake's stable interactions with MMP-13 and SIRT1 receptors, supporting its potential as a multi-functional anti-aging agent[1].
- Comparative Efficacy: Some suppliers and early literature claim it can be up to 5 times more effective than some other peptide technologies for reducing dynamic wrinkles, with one human test showing a 52% reduction in wrinkle depth after 28 days of use. It's important to note that such figures often come from ingredient suppliers and should be evaluated in the context of the final product formulation.
- Continuous Innovation: Research continues to optimize this compound. For example, a 2017 paper explored synthesizing new analogues of Syn-Ake, with one candidate showing a faster effect on reducing muscle contraction frequency in a cell model[3].
Safety and Regulatory Compliance
Safety is paramount when considering any active cosmetic ingredient.
- Safety Profile: Toxicological studies, including in vitro cytotoxicity and genotoxicity (Ames) tests, indicate that Syn-Ake has a high safety profile at cosmetic concentrations[1].
- Regulatory Status in China: In China's regulated cosmetics market, it is listed in the IECIC (Inventory of Existing Cosmetic Ingredients in China) and has a defined history of safe use. Authoritative safety assessments provide clear usage guidelines:
Up to 4% in rinse-off products.
Up to 3% in leave-on products for the body.
Up to 0.01% in leave-on products for the eye area.
- Global Formulation: For brands targeting international markets, formulating within these established safe-use levels, conducting thorough product safety assessments, and adhering to local regulations (like FDA or EU EC compliance) are essential steps.
Choosing and Using Syn-Ake Products
When looking for effective Syn-Ake products, keep these points in mind:
- Look for the INCI Name: Check the ingredient list for DIPEPTIDE DIAMINOBUTYROYL BENZYLAMIDE DIACETATE. Its position on the list can give a rough idea of its concentration.
- Synergy is Key: It often works best in formulations combined with other anti-aging ingredients like moisturizers, antioxidants (e.g., Vitamin C, E), and collagen-boosting peptides.
- Realistic Expectations: As a topical cosmetic ingredient, it offers a temporary, non-invasive improvement in the appearance of dynamic wrinkles. Consistency is key-daily use as part of a morning or evening routine is recommended for best results.
- Patch Test: As with any new skincare product, a patch test is recommended to check for individual sensitivity.
Frequently Asked Questions
Q: Is Syn-Ake the same as Botox?
A: No. While both can reduce the appearance of muscle-based wrinkles, their mechanisms differ fundamentally. Botox (botulinum toxin) is a neurotoxic protein that requires injection and prevents the release of the signal to contract. Topical Syn-Ake is a peptide that works at the muscle receptor level. It is less potent, non-invasive, and its effects are reversible with discontinued use.
Q: Are there any side effects?
A: When formulated within recommended cosmetic concentrations, it is generally well-tolerated. Any topical cosmetic has the potential to cause irritation in very sensitive individuals, which is why patch testing is advised.
Q: How long does it take to see results?
A: Some users may notice a smoothing effect with continued use over several weeks. Most supplier-reported clinical evaluations measure results after 28 to 60 days of regular use.
Conclusion
Dipeptide Diaminobutyroyl Benzylamide Diacetate (Syn-Ake) represents a fascinating fusion of biomimicry and cosmetic science. It offers a scientifically grounded, topical approach to addressing signs of aging by targeting both the immediate muscle contractions that cause dynamic wrinkles and some of the underlying enzymatic processes of skin aging.
By understanding its mechanism, safety, and how to identify it in formulations, you can make an informed decision about incorporating this advanced peptide into your skincare regimen. As the demand for effective, non-invasive anti-aging solutions grows, Syn-Ake continues to solidify its place as a valuable tool in modern cosmetic science.
References
- Gok, B., Budama-Kilinc, Y., & Kecel-Gunduz, S. (2023). Anti-aging activity of Syn-Ake peptide by in silico approaches and in vitro tests. Journal of Biomolecular Structure and Dynamics.
- A shortened, protecting group free, synthesis of the anti-wrinkle venom analogue Syn-Ake® exploiting an optimized Hofmann-type rearrangement. (2014). Tetrahedron Letters.
- Synthesis and Anti-wrinkle Efficacy of Botox-like Polypeptide. (2017). Herald of Medicine.





