Growth factors are signaling proteins involved in communication between cells. In topical skincare, growth-factor formulations are used with the aim of supporting visible improvements in texture, fine lines and firmness over time.
How growth-factor signaling works
Growth factors bind to specific receptors and influence downstream cellular processes. In normal skin biology, different growth factors participate in tissue maintenance, repair and extracellular-matrix regulation. A cosmetic growth-factor serum does not simply “add collagen” to the skin; its intended role is to interact with signaling pathways through the finished formulation.
Why results are gradual
Changes related to visible texture and firmness develop over time. That is why growth-factor skincare is better evaluated after consistent use over several weeks rather than after a few applications.
What does the evidence show?
A systematic review of topical growth-factor preparations for facial rejuvenation found modest improvements in investigator-rated texture, wrinkles and overall appearance. The review also emphasized substantial differences between formulas and study methods, so results from one product should not be generalized to every growth-factor product.
Where collagen fits in
Collagen is a major structural protein in the dermis and is one component of the broader extracellular matrix. Aging and UV exposure affect this structural network. Growth-factor skincare is studied as one possible way to support the appearance of skin affected by those changes, but it should not be described as rebuilding the dermis in the same way as a medical procedure.
How to use a growth-factor serum
Apply according to the product directions on clean skin and build the rest of the routine around tolerability, moisturizer and daily sunscreen. See ZO® Growth Factor Serum or browse the Growth Factors collection.
What matters most when comparing formulas?
- The finished formulation, not only the ingredient category.
- Product-specific testing and transparent claims.
- Stability and packaging.
- Compatibility with the rest of the routine.
- Realistic expectations about gradual cosmetic improvement.