The 6 Peptide Serum

Prior to purchasing COSRX's 6 Peptide Skin Booster, I saw countless positive reviews about it. Despite that, I was still quite skeptical, and I have to admit that I thought it was just another one of those TikTok viral products that we all forget about before we even finish using it. It promises to boost your overall skin condition and target issues like dullness, oily skin, dehydration, large pores, fine lines, redness, and sensitivity. It aims to improve the absorbability and effectiveness of your subsequent products while boosting collagen production. It is portrayed as a true multi-tasker in skincare.

When I looked at the ingredients list, I realized that my skepticism was unwarranted. This product contains some impressive peptides that are quite high on the ingredients list (the higher an ingredient is on the list, the higher its percentage in the overall formula), as well as niacinamide, glycerin, hyaluronic acid, and allantoin. I think this is a great introductory product for someone new to peptides, or as an add-on for those who want to take full advantage of the many benefits of peptides. Moreover, it is super affordable—one 5.07 fl oz bottle (which is a truly generous size) retails at $19.99 and is often on sale.

The only issue I have with this product is that it's called a serum when it really should be labeled as a toner. COSRX recommends using the 6 Peptide Skin Booster as your first step in your routine after cleansing—exactly like you would a toner. That's how I use it, followed by my regular routine, which includes a copper peptide. Given my age, current skincare goals, and my absolute love for peptides, I don’t feel that the 6 Peptide Skin Booster is quite enough for me, but I do think it would be sufficient for many others.

The consistency is very light and only slightly thicker than water; it feels smooth and hydrating. I absolutely adore the sensation of the product on my skin. I have noticed an overall improvement in texture, brightness, plumpness, and hydration. My face definitely feels softer and smoother when I use it, and I think it serves as a particularly nice base for makeup.

One of the aspects I truly appreciate about COSRX is their unwavering commitment to cruelty-free practices. They ensure that neither their finished products nor ingredients are tested on animals, and this extends to their suppliers and any third parties involved in the process. Furthermore, it's verified that their products are free from animal testing worldwide, including in mainland China.

Considering its price, impressive ingredients, and the lovely feel on the skin, I highly recommend that you give the 6 Peptide Booster a try.