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Kiehl’s branded photo of model with a formula on their cheek

Why is Collagen Important?

In the world of skincare, you may have heard a lot of talk about collagen. At Kiehl’s, we see collagen as a vital protein that plays a crucial role in maintaining skin’s plumpness, elasticity, firmness, and hydration.

As we age, the natural decline in collagen production in our skin can lead to loss of plumpness, and visible signs of aging, like pores, fine lines, wrinkles, changes in skin texture, and reduced firmness. Collagen is important for healthy skin because it acts as the “scaffolding” that supports our skin, providing the structural integrity to keep it plump and youthful looking.

What is Collagen Banking?

Boosting collagen reserves, also known as "collagen banking," helps to delay visible signs of collagen loss as you age, such as rough texture, loss of plumpness, elasticity and firmness. Seen as a proactive approach to skincare and to counteract the natural aging process, collagen banking works to both stimulate production of new collagen, while maintaining and preserving the existing collagen.

Through a combination of targeted treatments, tailored skincare routines, and using the right formulas and actives that can help repair, maintain and facilitate collagen turnover, you can boost your collagen reserves for younger-looking skin and delaying the onset of visible skin aging signs.

The Benefits of Building Up Collagen Reserves

One of the most noticeable benefits of collagen banking is its ability to prevent and reduce the appearance of wrinkles and fine lines. As we age, collagen production declines, causing the skin to lose its plumpness, elasticity and firmness. By replenishing collagen reserves, you can help keep your skin plump and smooth, minimizing the appearance of pores, wrinkles and fine lines.

In addition to its effects on the skin, collagen also plays a crucial role in hair and nail health. collagen is a key component of hair and nails, providing them with strength, flexibility and structure. By boosting collagen production, you can help strengthen weak, brittle hair and nails, promoting healthy growth and preventing breakage.


Maintaining healthy collagen reserves is crucial for preserving youthful skin and overall well-being, and can
be done so by supporting and protecting your skin.

Sun Protection

Excessive sun exposure can damage collagen, which can accelerate the aging process. Protect your skin from harmful UV rays by using a broad-spectrum sunscreen with an SPF of 30 or higher, like our Better Screen™ UV Serum, which is formulated with Collagen Peptides and can help protect and repair collagen. You can also wear protective clothing and seek shade during peak sunlight hours (10am–3pm is usually when the sun is most intense) to further protect your skin.

Prioritize Restful Sleep

During sleep, collagen can often repair and rejuvenate the skin. We recommend at least 7–9 hours of quality sleep each night to support collagen production and overall skin rejuvenation.

Manage Stress

Stress stimulates cortisol which initiates the breakdown of proteins, including collagen, and can contribute to visible signs of early aging. Practice stress-reduction techniques such as meditation, deep breathing, yoga, or spending time in nature or stress-relieving environments to keep stress levels in check.


Various ingredients and formulas can help boost collagen production and preserve existing collagen
reserves, supporting the effectiveness of collagen banking. These include:

Open jar of Kiehl’s Super Multi-Corrective Soft Cream with texture examples in the background

Super Multi-Corrective Cream

Our Super Multi-Corrective Cream is a nourishing multi-benefit anti-aging moisturizer that can help boost collagen reserves up to 25%*. It’s formulated with Proxylane, Adenosine, and an Antioxidant Complex to boost, repair, and protect collagen.

Our Super Multi-Corrective Soft Cream also works to help boost collagen reserves up to 25%*, and comes in a lightweight, refreshing texture for oily and combination skin types. Both formulas are suitable for sensitive skin types.

*Based on an in vitro collagen IV protein expression study comparing the effects of 0.16 mg/mL C-Xyloside (Proxylane) to control samples in human reconstructed skin after 8 days of culture.

Bottles of Kiehl’s formulas containing Vitamin C with oranges and orange slices in the background

Vitamin C

Vitamin C is a powerful antioxidant that helps protect collagen from damage caused by free radicals. It also plays a crucial role in the synthesis of new collagen. Formulas like our Powerful Strength Line-Reducing Concentrate is powered with Vitamin C and helps to boost skin radiance, firm skin, and smooths skin texture. Our Powerful Strength Line-Reducing & Dark Circle-Diminishing Vitamin C Eye Serum is also packed with 10% Pure Vitamin C, Tri-Peptide, and Hyaluronic Acid to help visibly correct lines, crow’s feet and under eye dark circles for a fresher, brighter-looking eye area.

Bottle of Kiehl's Retinol Serum with a Petri dish with formula samples in the background


Retinol, a derivative of Vitamin A, helps support collagen synthesis and increases cell turnover. It helps reduce the appearance of wrinkles and fine lines, improves skin texture, and evens out skin tone. We recommend trying our Retinol Skin-Renewing Daily Micro-Dose Serum for visibly reduced wrinkles and firmer skin.

Bottle of Kiehl’s Ultra Pure High-Potency Serum 1.5% Hyaluronic Acid

Hyaluronic Acid

Hyaluronic Acid is a naturally occurring substance in the skin that holds moisture and keeps it hydrated. It also plays a role in collagen synthesis, and can be found in our Ultra Pure High-Potency Serum 1.5% Hyaluronic Acid, which is formulated with just 7 ingredients to help replenish and retain moisture for healthy-looking and hydrated skin.


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