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Frequently Asked Questions
Questions? We've Got Answers
How are EGF and NAD+ different from retinol or vitamin C?
Retinol and vitamin C are powerful, but they work largely by accelerating surface cell turnover or neutralizing oxidative damage.
EGF and NAD+ work at a deeper level — triggering the biological signals that control cellular renewal and fueling the energy your cells need to actually carry out that repair.
Think of it as addressing the cause rather than the symptom. Many customers use the Elarix serum alongside vitamin C in the morning or retinol at night without any issue.
How soon will I see results?
Many customers notice improved hydration and a subtle glow within the first 1–2 weeks.
More significant changes — firmer skin texture, reduced fine lines, improved elasticity — typically become visible between weeks 3 and 6 with consistent use.
Like all skin renewal ingredients, EGF and NAD+ work in alignment with your skin's natural regeneration cycle, which runs on roughly a 28-day clock. Patience pays off considerably here.
Is this serum safe for sensitive skin?
Yes. The Elarix EGF NAD+ Firming Serum is formulated without parabens, artificial fragrances, sulfates, or harsh alcohols.
EGF is a naturally occurring protein your skin already produces, making it exceptionally well-tolerated even by reactive or sensitive skin types.
As with any new active ingredient, we recommend a patch test on the inner forearm before full-face use if you have a history of sensitivity.
Can I use this serum with retinol or AHAs?
Absolutely. EGF and NAD+ play nicely with most other actives. A common approach is to use the Elarix serum in the morning (under SPF) and reserve retinol or exfoliating acids for your evening routine.
If you're using a prescription-strength retinoid, we recommend spacing application and checking with your dermatologist, as with any new product.
Why is EGF considered so effective for anti-aging?
EGF was first studied in the context of wound healing — researchers noticed it dramatically accelerated skin cell regeneration.
That same mechanism is what makes it so compelling in anti-aging skincare: it signals keratinocytes and fibroblasts (the cells responsible for collagen and elastin production) to become more active.
Numerous clinical studies have demonstrated that topical EGF application can meaningfully improve skin firmness, elasticity, and fine line depth over 4–8 weeks of use.