Yes, you can use growth factors with retinol, and the combination is one of the more effective anti-aging pairings in skincare. The two ingredients work through completely different pathways, so they complement rather than compete with each other. Growth factors signal skin cells to repair and produce collagen, while retinol regulates gene expression to speed cell turnover and protect existing collagen from breaking down.
How They Work Together
Retinol and its derivatives work by binding to specialized receptors inside the cell nucleus called retinoic acid receptors. Once bound, they directly influence gene activity, turning up the production of new skin cells and turning down the enzymes that degrade collagen. This is a genomic process, meaning retinol literally changes which genes your skin cells are reading at any given time.
Growth factors like epidermal growth factor (EGF) and fibroblast growth factor (FGF) work at the cell surface instead. They dock onto receptors on the outside of skin cells and trigger signaling cascades that promote cell division, wound repair, and new collagen synthesis. Because one ingredient acts inside the nucleus and the other acts at the cell membrane, there’s no direct competition for the same receptor or pathway. In fact, retinoid signaling naturally interacts with fibroblast growth factor pathways during tissue development and repair, suggesting the two are biologically designed to work in tandem.
Growth Factors May Ease Retinol Irritation
One practical benefit of pairing these ingredients is that growth factors can support the skin barrier while retinol challenges it. Retinol is well known for causing dryness, peeling, burning, and stinging during the adjustment period, sometimes called retinization. This happens partly because retinol disrupts tight junctions between skin cells and alters structural proteins in the outer layer of skin.
Research into retinol-induced irritation has identified the epidermal growth factor receptor (EGFR) as an important regulator of barrier function. People with certain genetic variations affecting this receptor tend to be more susceptible to retinol sensitivity. While topical growth factor serums aren’t a direct fix for this genetic susceptibility, their role in supporting cell turnover and repair means they can help the skin recover faster from the disruption retinol causes. If you’ve struggled with retinol irritation in the past, layering a growth factor serum into your routine may make the adjustment smoother.
Types of Growth Factors in Skincare
Not all growth factor products are the same. The most common types you’ll see in serums and creams include epidermal growth factor (EGF), which promotes cell proliferation in the outer skin layer, and fibroblast growth factor (FGF), which targets the deeper dermal layer where collagen lives. Many products contain a blend of several growth factors along with peptides and cytokines.
These ingredients are typically produced using recombinant DNA technology, meaning they’re lab-made copies of human proteins manufactured by engineered bacteria or yeast cells. This process, the same one used to produce insulin, allows for large-scale production of highly pure growth factors. Some brands source their growth factors from human stem cell conditioned media, snail secretion, or plant-based extracts, though the evidence base is strongest for recombinant human growth factors.
A Note on pH and Stability
One concern people have about combining active ingredients is whether they destabilize each other in the same routine. Retinol products tend to be formulated at a mildly acidic to neutral pH, typically between 5 and 6. Growth factor proteins are sensitive to pH extremes. Lab research on fibroblast growth factor shows that at a pH around 4.0, the protein begins to partially unfold and lose its normal structure. However, most over-the-counter retinol serums don’t drop that low. Prescription retinoids and certain vitamin C serums are more acidic, so if you’re using one of those, applying your growth factor serum at a different time of day is a safer bet.
As a general rule, applying the two products in separate layers (letting the first one absorb for a minute or two) is enough to avoid any stability issues with standard retinol formulations.
When to Apply Each One
The standard approach is to use retinol at night. It breaks down in sunlight and works best during the skin’s natural overnight repair cycle. Growth factors are more flexible. They can go in your morning routine or your evening routine, and many dermatologists suggest using them at night alongside retinol for maximum anti-aging benefit.
If you apply both in the evening, the typical order is cleanser, growth factor serum, then retinol, then moisturizer. Growth factors are usually in a water-based serum that absorbs quickly and should go on before heavier or more occlusive products. Some people prefer to use growth factors in the morning instead, which works fine and gives your skin repair signals during the day while retinol handles the night shift.
Dermatologists at Nebraska Medicine recommend establishing a baseline routine of cleanser, sunscreen, retinol, and an antioxidant before adding growth factors. This isn’t because the combination is risky. It’s because growth factor products tend to be expensive, and it makes sense to build your routine in order of proven impact. Retinol is the first vitamin the FDA approved as an anti-wrinkle agent, and it remains one of the most evidence-backed topicals for skin aging. Growth factors are best thought of as an upgrade once you’ve got the fundamentals locked in.
Who Benefits Most
The retinol and growth factor combination is particularly well suited for aging skin. Retinol strengthens the epidermis, reduces transepidermal water loss, and inhibits the enzymes (called metalloproteinases) that chew through collagen as you age. Growth factors layer on additional collagen-boosting and cell-renewal signals. Together, they address fine lines, skin texture, and firmness from two different angles.
People dealing with post-procedure recovery, sun damage, or hyperpigmentation can also benefit. Research supports the use of retinol for photoaging and melasma, and growth factors can accelerate the healing and turnover process. If your skin is very sensitive or actively inflamed from conditions like eczema or rosacea, introduce retinol slowly and at a low concentration before stacking additional actives on top. Growth factors are generally well tolerated even by reactive skin, so they’re rarely the ingredient causing problems in a combined routine.