Big Promises, Honest Answers
Scroll through social media and lash and brow serums seem to promise overnight miracles. Real life is calmer than that. A good serum is a simple, consistent conditioning step, and the most useful thing you can do is understand what is in the bottle and follow its directions. In this guide, I walk you through two separate COCOJOJO products, how each one is applied and what realistic expectations look like.
What Is Peptide Care?
Peptides are short chains of amino acids that are widely used in cosmetic formulas. In lash and brow care, they are paired with conditioning ingredients to help lashes and brows look healthier, glossier and more defined.
Both COCOJOJO serums share the same named peptide blend: Myristoyl Pentapeptide-17, Myristoyl Hexapeptide-16, Biotinoyl Tripeptide-1 and Acetyl Tetrapeptide-3. They are supported by biotin, keratin, hyaluronic acid, aloe vera and pumpkin seed extract. I like that the full list is named on each product page, so you know exactly what you are applying.
Instant 300 Lash Advance Serum
The Instant 300 Lash Advance Serum is made for the lash line. It is a lightweight, non-greasy, non-sticky formula with a dropper applicator.
How to apply it, according to its label:
1. Cleanse the eye area, remove all eye makeup thoroughly and pat dry.
2. Apply 1 to 2 drops to the lash line of both the upper and lower lashes using the dropper, sweeping from the inner corner outward, as close to the lash root as possible.
3. Allow 60 seconds to absorb before applying other eye-area products or makeup.
4. Use morning and/or evening as part of your regular routine.
Patch test first: apply a small amount to your inner forearm and wait 24 hours before first full use. Avoid letting the dropper tip touch the eye area.
Instant Eyebrows 300 Advance Serum
The Instant Eyebrows 300 Advance Serum is made for the brow line. It uses the same peptide blend in a lightweight, non-greasy formula with a dropper applicator.
How to apply it, according to its label:
1. Cleanse the brow area, remove all makeup and excess skincare from the brow line and pat dry.
2. Apply 1 to 2 drops along the brow line of both brows using the dropper, sweeping from the inner corner outward, as close to the brow root as possible.
3. Allow 60 seconds to absorb before applying brow products, makeup or skincare.
4. Use morning and/or evening as part of your regular routine.
The same patch test applies: inner forearm, 24 hours, before first full use.
Lash vs Brow: A Quick Comparison
- Product name: Instant 300 Lash Advance Serum / Instant Eyebrows 300 Advance Serum
- Intended use: lash line (upper and lower) / brow line
- Applicator: dropper / dropper
- Amount: 1 to 2 drops / 1 to 2 drops
- When: morning and/or evening / morning and/or evening
- Retail sizes: 3 ml and 1 oz / 5 ml and 1 oz
Both are listed in a larger 4 oz size for professional and private-label buyers. Check each product page for current sizes and prices.
Realistic Expectations
Here is the honest part. These are cosmetic conditioning serums. They are designed to be used consistently as a routine step, not as a one-time fix, and they do not change your lashes or brows overnight. Everyone's lashes and brows are different, so results vary from person to person. Be wary of any before-and-after photo that promises a dramatic change in days.
What you can expect right away is the experience the labels describe: a lightweight, non-sticky formula that absorbs in about a minute and fits under mascara or brow makeup.
Routine Questions, Answered by the Labels
Can I use both serums at the same time?
Yes. They are separate products for separate areas. Apply the lash serum along the lash line and the brow serum along the brow line, each following its own directions.
Can I wear mascara or brow makeup?
Yes, after the serum has absorbed. Both labels ask you to wait 60 seconds before applying other products.
Can I use the lash serum with extensions?
The lash serum page says the formula is compatible with most lash extensions. Apply it to the natural lash line, avoid the bonding area and check with your lash technician if you are unsure.
How should I store them?
Keep them in a cool, dry place away from direct sunlight, and keep the dropper tip clean.
Choose Your Serum
Peptide care works best when it is simple: the right product for the right area, applied as the label says, every day. Shop the Instant 300 Lash Advance Serum for your lashes and the Instant Eyebrows 300 Advance Serum for your brows. Questions about which one fits your routine? Our COCOJOJO customer support team is happy to help.