Collagen is the protein that keeps skin firm and springy. The body gradually produces less collagen with age, which can contribute to changes in skin firmness, elasticity and density over time. That is why skin starts to feel less dense and look less even.

So what can a cream do about it? Here is the honest version.

What a Collagen Cream Can Do

A collagen cream primarily works by supporting hydration and the skin’s moisture barrier, helping skin look smoother, fuller and more supple. Used daily, it helps skin look fuller and more even.

A good one is judged on how skin looks and feels over weeks, not on a single application.

What to Expect From Texture and Finish

Texture decides whether you keep using it. Heavy balms sit on top and can feel greasy under makeup. Lighter creams absorb and leave a smooth finish.

Celestial Collagen Cream has a velvety, non-slick finish that leaves skin looking soft and radiant.

Where It Fits in Your Routine

Cream is the last step of skincare, morning and evening. It seals in whatever you applied before it.

The brand suggests spreading it across the forehead, eye area, both cheeks, around the mouth, chin and neck, then massaging by rolling from the inside outward and patting lightly to finish.

What the Testing Showed

re:nk built the Cellestial routine around skin density. In a clinical study using the Cellestial Collagen Treatment, Serum and Cream together, the following results were measured after one week:

• Inner skin density: +25.16%
• Outer skin density: +14.99%
• Radiance density: +26.37%

After four weeks, the skin aging index improved by 26.09%. That index combines radiance, wrinkle count and depth, and outer elasticity.

Human clinical study by P&K Skin Clinical Research Center Co., Ltd., Jan 16 to Feb 14, 2025, on 22 women aged 40 to 59 using the re:nk Cellestial Collagen Treatment, Serum and Cream together. Individual results may vary.

Who a Collagen Cream Suits

Skin that feels less springy than it used to, looks flatter in photos, or holds expression lines longer. Most people notice this from their mid-30s, which is who this cream was made for.

Cellestial Collagen Cream reaches select Costco warehouse beauty tables on October 7. More on the line at re-nk.us/cellestial.