Collagen drops by 1% a year after 25: What science says about this anti-ageing ingredient

Collagen levels naturally decrease by about 1% each year from our mid-twenties onward, according to family medicine physician Dr. Daniel Ghyiam and dermatologist Dr. Vishalakshi Vishwanath. This gradual decline is one of the earliest signs of aging skin, leading to fine lines around the eyes, reduced firmness, slower fading of acne scars, and a thinner, less elastic complexion.

However, factors like sun exposure, smoking, poor sleep, and chronic stress can accelerate this process, causing these changes to appear much earlier in life.

Copper peptides, marketed as powerful anti-aging ingredients, have a solid scientific foundation. Composed of small protein fragments attached to copper ions, these peptides function as signaling molecules that aid in skin repair and promote collagen and elastin production. By stimulating fibroblasts—skin cells responsible for collagen and tissue repair—copper peptides can improve skin texture, firmness, and reduce fine lines when used consistently over time.

They also support wound healing, protect skin cells from UV damage, and enhance overall skin repair.

While copper peptides show promise in hair growth by creating a healthier scalp environment and supporting hair follicles, the evidence in this area remains limited. Dermatologists recommend that individuals in their mid-20s focus on prevention rather than correction, establishing a strong skincare routine that includes a daily broad-spectrum sunscreen, gentle cleanser, skin-type-specific moisturizer, and a nighttime retinoid if tolerated.

Copper peptides can then be introduced once daily, preferably in the evening, as part of this foundation.