Collagen + Vitamin C: What Can They Really Do for Aging Skin?

Why Skin Changes in Midlife

During perimenopause and menopause, declining estrogen levels can affect collagen production, skin thickness, elasticity, and hydration. These changes can lead to drier skin, fine lines, loss of firmness, and what many of us describe as “crepey” or thinner skin, especially on the arms, legs, and décolletage.

While these changes are a normal part of aging, that doesn’t mean we’re powerless. Understanding what’s happening is the first step toward making informed choices about skincare, nutrition, and lifestyle.

What Collagen Actually Does

Collagen is the most abundant protein in the body. It provides structure and strength to skin, bones, tendons, and connective tissue. In the skin, collagen helps maintain firmness, elasticity, and hydration.

Our natural collagen production begins to decline in our mid-20s and accelerates during perimenopause and menopause. This can contribute to visible changes in skin texture and structure.

The Role of Vitamin C

Vitamin C is an essential nutrient that the body needs to produce collagen. It acts as a cofactor in the enzymatic processes that stabilize and cross-link collagen fibers. Without adequate vitamin C, the body cannot efficiently synthesize collagen.

Vitamin C also has antioxidant properties, which may help protect skin cells from damage caused by UV exposure and environmental stressors.

Can Supplements Improve Aging Skin?

Research on collagen supplements and vitamin C shows some promising results, but the evidence is still evolving. Studies suggest that collagen peptides may help improve skin hydration, elasticity, and thickness, particularly after 8–12 weeks of consistent use. Vitamin C is well-established as necessary for collagen synthesis, though supplementation beyond meeting your nutritional needs may not provide additional benefits for skin in everyone.

It’s important to have realistic expectations. Supplements aren’t a miracle solution, and results can vary based on individual factors like age, lifestyle, diet, and skincare routine.

My routine & products I use

My interest in collagen isn't theoretical. I've been paying attention to how my skin looks and feels in midlife, and I've built a routine around caring for it consistently.

I've used Great Lakes collagen peptides for years and currently take 500 mg of vitamin C daily. I also use a separate body-care routine that includes dry brushing, vitamin C body care, moisturizer, body oil, and strength training. I think of these as different parts of a broader approach—not a single magic combination.

Because I use several things at once, I can't reliably attribute any change in my skin to one supplement or product. What I can tell you is what I've chosen to use and why it remains in my routine.

High-dose vitamin C may be unsuitable for some people, including those with certain kidney conditions or iron-overload disorders. Collagen sources also matter for food allergies. This is my routine, not individualized medical advice.