Nobody really explains this part. The collagen and elastin holding your face up are on a maintenance schedule, and somewhere in your thirties the repair side starts falling behind the wear side. The loss is slow enough that no single morning feels like the cause, which is why you notice it in a photograph instead of a mirror.

This is where EGF and NAD+ come in. NAD+ is the coenzyme your skin cells run their repair work on, and EGF is a growth factor that signals those cells to get on with renewing. Meimei pairs both with collagen extract, so the serum works on the structure underneath rather than the surface. Two applications a day, and the slack finally has something working against it.

Rated 4.9 from 25,320 reviews by people using this exact serum.

I kept buying eye cream. The eye cream was fine. When the support underneath your skin thins out, everything sits a little lower by evening, and that is the face you keep catching in the bathroom mirror at ten o'clock no matter how early you went to bed. Concealer covers it for a few hours, then you are right back where you started.

Most people feel this one first. Skin that feels plumper and more comfortable tends to show up inside the first week, long before anything shows in a photo. Typical rather than guaranteed, but you stop bracing for your own reflection.

A pearl-sized amount on face and neck, morning and night, after cleansing and toning.

This is where most people quit. They use something for ten days, take a photo, see nothing, and move on to the next bottle. Skin does not rebuild on that schedule. It changes slowly in both directions, which is the same reason the sagging crept up on you without an obvious start date.

Firming is a long game. Softer, more hydrated skin often turns up in the first week, but the visible work on fine lines, elasticity and radiance is a two to four week story with consistent use. Typical rather than guaranteed, which is why the guarantee here runs a full 60 days. One caveat worth taking seriously: if your skin is reactive, or you are already using a prescription retinoid or an acid treatment, patch test along your jaw first and introduce it slowly instead of layering everything at once.

Consistency beats intensity. The same two applications at the same times daily is the habit that pays.

One afternoon reading the back of six bottles sent me down this hole. Nearly all of them were built on hydration, a pleasant texture, and nothing that speaks to the repair machinery underneath. Hydration makes skin look better today. It does not touch the reason it went slack. You are not buying a weaker firming serum. You are buying a different product.

Meimei builds this one on EGF and NAD+ with collagen extract, and prints the whole ingredient list where you can read it: aqua, glycerin, 1,2-hexanediol, carbomer, arginine, nicotinamide adenine dinucleotide, collagen extract. Seven things, nothing hiding behind a blend name. If you are comparing firming serums, that list is the first thing worth reading.

EGF, NAD+ and collagen extract, with the full ingredient list published. No proprietary blends.

Every serum on the shelf says clinically proven. Ask what was measured and watch what happens. I went looking for figures from four brands and got marketing pages, a great deal of the word advanced, and not one number I could hold anyone to.

This is the part I did not expect to care about as much as I do. Meimei publishes what its consumer study actually measured: hydration up 36.8% after the first application, fine lines down 29.4% at two weeks, elasticity and firmness up 33.1%, texture up 27.6%, radiance up 24.9%. It is a self-perception study rather than an instrument reading, and the page says so, which is more honest than most of what I read.

Five measured outcomes published with numbers attached, and the study method stated plainly.

Use it morning and night for 60 days. If your skin does not feel firmer, send it back and we refund your purchase.

Buy one and get one free, or save 25% with automatic refills.