Growth factors are among the most scientifically sophisticated ingredients in modern skincare — and among the most frequently misunderstood. They represent the frontier of topical anti-ageing science, with a growing body of clinical evidence supporting their role in skin rejuvenation. Here is an honest, clinically informed assessment of what growth factors are, whether they work and which products at Esthe Clinic are worth using.
What Are Growth Factors?
Growth factors are naturally occurring proteins that act as signalling molecules — they bind to receptors on skin cells and instruct those cells to perform specific functions. In the context of skin ageing, the most relevant growth factors are those that signal fibroblasts to produce more collagen and elastin, stimulate the formation of new blood vessels (angiogenesis) and promote the overall renewal and regeneration of skin tissue.
As we age, the concentration and activity of growth factors in skin declines — contributing to the reduced capacity for self-repair and renewal that characterises ageing skin. Supplementing the skin with topical growth factors is therefore theoretically logical as an anti-ageing strategy.
Do Topical Growth Factors Work?
The honest answer is: yes, with caveats. The main scientific debate around topical growth factors concerns their molecular size — growth factor proteins are large molecules, and there is legitimate debate about whether they can penetrate the skin barrier efficiently enough to reach the receptors they need to bind. However, several clinical studies have demonstrated measurable improvements in skin texture, fine lines, firmness and overall skin quality with consistent use of well-formulated growth factor products, suggesting that either some penetration does occur or that the surface-level effects of growth factor application are themselves meaningful.
The quality of the growth factor formulation matters enormously — the source, stability and delivery mechanism of growth factors significantly affect their activity and efficacy. Growth factors in well-designed clinical products from established dermatological brands are meaningfully different from growth factor claims in lower-quality consumer products.
The Best Growth Factor Products at Esthe Clinic
ZO Skin Health Growth Factor Serum
A lightweight gel serum formulated specifically to strengthen skin, support the skin's natural rejuvenation processes and protect against the mechanisms of environmental damage. The ZO Growth Factor Serum uses a stable, clinically optimised growth factor complex alongside a comprehensive antioxidant and barrier-supporting formula. Clinical data shows improvements in overall skin health, firmness and resilience with consistent use. Suitable for all skin types and designed to be used as a daily foundation layer — morning and evening — in any anti-ageing routine.
ZO Skin Health Growth Factor Eye Serum
A dedicated periorbital application of ZO's growth factor technology targeting the specific concerns of the eye area: deep eye wrinkles, crease formation, hollowness and dark circles. The innovative cooling massaging applicator tip improves microcirculation and reduces morning puffiness during application. One of the most effective daily eye treatments available at clinical grade for those in their late thirties or beyond.
SkinCeuticals Cell Cycle Catalyst
While not a growth factor product in the traditional sense, SkinCeuticals Cell Cycle Catalyst works at the level of cell cycle regulation — targeting the cellular processes that control skin cell turnover and renewal. By accelerating surface cell turnover, it promotes the emergence of fresher, more evenly toned skin and supports the renewal processes that slow with age. An advanced serum for those seeking targeted cell-level anti-ageing correction.
How to Use Growth Factors in Your Routine
Growth factor serums are best applied after cleansing and before heavier moisturisers — their lightweight textures allow them to penetrate efficiently before being sealed in by a richer cream. They can be used morning and evening and pair well with Vitamin C in the morning (applied after Vitamin C) and alongside retinol in the evening (applied after retinol has absorbed).
Unlike retinol or acids, growth factor serums do not require a cautious introduction period — they can be used from day one without the skin adaptation phase required for more aggressive actives.
Who Benefits Most from Growth Factors?
Growth factors are most relevant for those in their late thirties and beyond, when the natural decline in skin growth factor activity becomes clinically significant. They are particularly valuable for those who have already optimised their retinol and Vitamin C use and are looking for the next layer of anti-ageing support. They are also excellent for those whose skin is too sensitive or reactive for retinol, as they provide meaningful anti-ageing benefit without the irritation potential of retinol.
Post-procedure, growth factors are highly beneficial — the increased skin permeability immediately following microneedling or chemical peels allows enhanced penetration and accelerates the regenerative processes stimulated by the treatment.
Browse our full anti-ageing serum range including ZO Skin Health Growth Factor Serum at Esthe Clinic, or book a consultation to find out whether growth factors belong in your routine.