EGF NAD+ Firming Serum

EGF NAD+ Firming Serum is powered by advanced skin-renewing actives like EGF and NAD+ to target fine lines, loss of firmness, and dullness at the source. It deeply hydrates, smooths the look of wrinkles, and supports elasticity for a healthier, more youthful-looking complexion.

Expect smoother skin. Improved firmness. Long-lasting hydration. And a naturally radiant, refreshed glow—every single day.

Step 1: Cleanse & Prep
Cleanse and tone your skin thoroughly before application.

Step 2: Apply
Dispense a pearl-sized amount and apply evenly to the face and neck.

Step 3: Massage
Gently massage into the skin using upward motions until fully absorbed.

Step 4: Repeat Daily
Use morning and night for best results. Can be used as the final step of your skincare routine or layered with your favorite serums.

Advanced Age-Defying Formula

NAD+ (Nicotinamide Adenine Dinucleotide)
Helps support skin vitality and promotes a smoother, firmer, more youthful-looking complexion.

EGF (Epidermal Growth Factor)
Supports skin renewal and elasticity, helping reduce the appearance of fine lines and wrinkles.

Niacinamide (Vitamin B3)
Brightens dull skin, refines texture, and helps improve the appearance of uneven skin tone.

Multi-Weight Hyaluronic Acid
Delivers intense hydration to visibly plump skin and support a healthy moisture barrier.

Centella Asiatica + Madecassoside
Helps calm visible redness and soothe stressed skin while supporting a stronger skin barrier.

Panthenol + Ceramide NP
Deeply nourish and strengthen the skin barrier, helping lock in moisture for long-lasting hydration.

Adenosine
Known for its wrinkle-smoothing properties, helping skin appear firmer and more youthful.

🌱 Made with skin-loving ingredients

✓ Supports Firmer, Smoother-Looking Skin
✓ Deeply Hydrates & Plumps
✓ Helps Improve Skin Elasticity
✓ Brightens & Evens Skin Tone
✓ Soothes & Strengthens The Skin Barrier

Free From Parabens, Sulfates & Phthalates

At KST, we work hard to get your order to you as quickly as possible. Most orders ship within 2 business days, and we ask that you allow up to 5 business days for delivery.

Returns & Refunds
Need to return or exchange a product? No problem—we’ve made it easy and hassle-free.

If you're not satisfied with your KST products, you're eligible for a 100% refund within 60 days of delivery. No restocking fees, no stress.

We just ask that you give the product a fair try before requesting a return.

To start a return, simply contact our support team:

Email: support@koreanskintherapy.com (available 24/7, with replies within 24 hours.

How Quickly Will I See Results?

Most customers notice an immediate boost in hydration and radiance after the first application. With consistent daily use, skin typically appears smoother, firmer, and more refreshed within 2–4 weeks. Continued use helps improve the appearance of elasticity, texture, and fine lines over time.

How Is This Different From Other Anti-Aging Serums?

Unlike traditional moisturizers that focus primarily on hydration, our formula combines NAD+, EGF, Niacinamide, Hyaluronic Acid, and Ceramides to support skin renewal, hydration, and barrier health simultaneously. This multi-action approach helps address multiple visible signs of aging at once.

Can I Use This If I've Had Botox or Fillers?

Yes. This serum works alongside your existing skincare routine and cosmetic treatments. Many customers use it to help maintain a smoother, more youthful-looking complexion between appointments.

Can I Use This On My Neck & Décolletage?

Absolutely. The neck and chest are often among the first areas to show visible signs of aging. Our formula can be applied to the face, neck, and décolletage to help improve hydration, firmness, and overall skin appearance.

Can I Use This With Retinol, Vitamin C, or Exfoliating Acids?

Yes. NAD+ and EGF pair well with most skincare ingredients. Apply after cleansing and toning, and before heavier creams or moisturizers. If using potent actives like retinol or exfoliating acids, introduce products gradually if you have sensitive skin.

Will This Clog My Pores?

No. The lightweight, fast-absorbing formula is designed to hydrate without feeling heavy or greasy. It absorbs quickly into the skin and is suitable for most skin types, including oily and combination skin.

Is It Suitable For Sensitive Skin?

Yes. The formula includes soothing ingredients like Centella Asiatica, Madecassoside, Panthenol, and Ceramide NP to help support the skin barrier and calm visible irritation. As with any skincare product, we recommend patch testing before first use.