After more than 20 years recommending professional skincare tools to clients, the AOS Nano Infusion Pen is one of the devices I am most excited to put in people's hands. Not because it is complicated or intimidating, but precisely because it is neither. It is one of the most effective ways to upgrade what your skincare products actually do for your skin, without needles, without downtime, and without the recovery period that has historically kept professional-level results in the treatment room.

This is the complete guide: what the device actually does, how it is different from microneedling, the three intensity levels, the weekly and monthly protocols, which serums to use and why, safety guidelines, and answers to every question we hear from clients. Everything you need to use this device confidently and get real results.

What Is the AOS Nano Infusion Pen?

The Art of Skin Care Nano Infusion Pen is a professional-grade, non-invasive nano needling device that uses mono-crystalline silicon tips to create ultra-fine micro-channels in the skin's outermost layer. These temporary pathways allow active ingredients in serums to penetrate far more deeply than they can with topical application alone, while simultaneously stimulating the skin's natural collagen production and cellular renewal.

The key word is non-invasive. Traditional microneedling uses metal needles that puncture into the dermis, creating a controlled injury response with associated downtime, redness, and the need for professional supervision. The Nano Pen does not pierce the skin. The mono-crystalline silicon tips work at the very surface of the stratum corneum, which is why it is comfortable to use, appropriate for sensitive skin types, and safe to perform at home up to three times per week.

The result is dramatically improved serum absorption, visibly smoother texture, and supported collagen production, all without pain or recovery time.

How Nano Infusion Differs From Microneedling

This is the most common question we get, and it is worth answering clearly because the two treatments serve genuinely different purposes.

Microneedling uses metal needles ranging from 0.5mm to 2.0mm that penetrate into the dermis, creating micro-injuries that trigger a wound-healing inflammatory response. This stimulates significant collagen remodeling and is highly effective for deeper scarring, significant laxity, and advanced aging. Because it breaks the skin's surface barrier, it requires topical anesthesia, carries a risk of post-inflammatory hyperpigmentation in deeper skin tones, and involves two to five days of redness and recovery. It is a professional or medically supervised procedure.

Nano infusion uses silicon tips that work at the skin's surface layer without breaking the barrier. There is no inflammatory wound response, no downtime, no recovery period, and no contraindication for sensitive skin or skin of color. It is appropriate for home use up to three times per week.

The practical implication: nano infusion is not a replacement for microneedling when deeper structural correction is needed. It is a complementary, sustainable daily-use tool that dramatically improves what your serums do between professional treatments and supports consistent cellular renewal over time.

Understanding the Three Intensity Levels

The AOS Nano Infusion Pen has three intensity levels, each with a distinct purpose. Using the right level for your goal is important for both results and safety.

Level 1: Blue — Infusion Mode

The gentlest setting, designed for routine serum infusion sessions. Best for driving water-based serums deeper into the skin, maintaining hydration, and supporting general skin health. Safe to use up to three times per week. This is the level most people use most often.

Level 2: Green — Gentle Exfoliation Mode

Combines light surface exfoliation with enhanced serum infusion. Begins to refine texture and support cellular turnover alongside product penetration. A middle ground between the routine infusion session and the monthly resurfacing treatment.

Level 3: Red — Exfoliation Mode

The most intensive setting, reserved for monthly deeper resurfacing sessions when the goal is significant texture refinement, surface renewal, and more pronounced collagen stimulation. Use this level no more than once per month.

The Weekly Protocol: Glow Infusion Treatment

Use one to three times per week on Level 1 or Level 2. Each session takes approximately ten to fifteen minutes.

Step 1: Double Cleanse

Begin with the Hydrinity Prelude Double Cleanse. Apply to dry skin and massage thoroughly to dissolve sunscreen, makeup, and impurities. Rinse with lukewarm water, then cleanse a second time to leave the skin fresh, balanced, and ready for treatment.

Optional Step: LED Prep

If you have an LED device, a five to ten minute red light session before nano infusion optimizes ATP production, energizes skin cells, and supports faster renewal. This is not required but meaningfully amplifies results.

Step 2: Attach a Fresh Cartridge

Always use a new single-use nano cartridge for every session. Never reuse a cartridge.

Step 3: Apply Your Serum

Apply a generous layer of your chosen water-based serum to the treatment area. The skin must remain moist and slippery throughout the session. Dry skin will cause the device to drag rather than glide, which reduces effectiveness and comfort.

Hero Serum: Epicutis Lipid Serum

The Epicutis Lipid Serum is our primary recommendation for weekly infusion sessions. Formulated with patented TSC technology, it calms inflammation, reinforces the skin barrier, and delivers concentrated lipid support that penetrates especially effectively through the nano channels. It is water-based, lightweight, and designed to absorb fully rather than sitting on the surface, which makes it ideal for infusion. Apply generously before and reapply during the session as needed to maintain slip.

Serums to avoid during infusion: Oils, exfoliating acids (AHAs, BHAs), retinoids, and vitamin C. These can cause irritation when infused and are better applied in your regular routine outside of treatment sessions.

Step 4: Use the Device

Press and hold the power button to activate. Glide the pen gently, section by section, across the face. Use no pressure — let the device do the work. Reapply serum as needed to keep the skin moist. Work systematically from forehead to cheeks to chin and neck.

The device should never feel scratchy or sharp. If it does, stop immediately and contact AOS support before continuing.

Step 5: Apply Regenerative Serums After Treatment

Immediately after your session, the skin is in a highly receptive state. This is the moment to apply your most advanced regenerative formulas. Apply Plated Skin Science INTENSE Serum or NeoGenesis Recovery Serum now for maximum benefit.

Important: Do not infuse stem cell, exosome, or growth factor serums directly through the device. These advanced formulas have delicate delivery systems that can be disrupted by needling. Always apply them after treatment, not during.

Step 6: Seal and Calm

Follow with your regular moisturizer. Apply SPF the following morning without exception.

The Monthly Protocol: Resurfacing Treatment

Use once per month on Level 3. This is your deeper renewal session, focused on texture refinement, pore refinement, and more significant surface renewal. Allow at least four weeks between monthly sessions.

Step 1: Double Cleanse

Same double cleanse as the weekly protocol. Thorough prep is especially important for the monthly session since the higher intensity level benefits most from a clean, well-prepared skin surface.

Step 2: Optional LED Prep

Five to ten minutes of red light before the monthly treatment is particularly valuable here. The enhanced ATP production and cellular energy supports faster recovery and more robust collagen stimulation.

Step 3: Apply Serum

For the monthly resurfacing session, a richer formula with good slip helps keep the skin comfortable throughout the longer, more intensive treatment. Epicutis Lipid Serum is a good choice for its healing and regenerative support during a more intensive session.

Step 4: Use Level 3

Work slowly and systematically across the face, neck, and any target areas. Take your time in sections. Keep the skin continuously moist throughout. The device should never feel scratchy or sharp. If it does, stop immediately and contact AOS support before continuing.

Step 5: Post-Treatment Recovery

After the monthly session, apply Plated Skin Science INTENSE Serum or NeoGensis Recover Srum immediately while the channels are open.

Follow with the CO2 Lift Pro Carboxy Treatment Mask for ultimate recovery and collagen support. Apply a generous, even layer and leave on for 45 to 60 minutes. The carboxy mask creates a topical hyperbaric oxygen environment that accelerates healing, boosts collagen production, and significantly enhances the results of the nano infusion session. Gently peel away and remove any residue with a soft damp cloth.

Step 6: Next Morning

Apply SPF. Your skin may feel slightly sensitive for 24 hours following the monthly treatment. Avoid exfoliating acids and retinoids for 48 hours post-treatment.

What Serums Work Best With the Nano Pen

Use during infusion (water-based, good slip, nourishing ingredients):

Epicutis Lipid Serum — our hero recommendation. Patented TSC technology calms inflammation and reinforces the barrier while providing excellent slip for smooth device gliding.

Senté Hydration+ Serum — four forms of hyaluronic acid provide deep, layered hydration and outstanding slip, making it one of the most comfortable infusion serums to work with.

Le Mieux Hyaluronic Serum — a clean, concentrated hyaluronic acid serum that glides smoothly, keeps skin continuously moist throughout the session, and delivers meaningful hydration through the nano channels.

Apply after infusion (not through the device):

Plated Skin Science INTENSE Serum — platelet-derived exosomes for advanced healing and regeneration.

 NeoGenesis Recovery Serum — stem cell released molecules applied post-treatment for maximum absorption.

Epicutis Arctigenin Brightening Treatment — brightening post-treatment for pigmentation concerns.

Safety Guidelines and Contraindications

The AOS Nano Pen is designed to be gentle and appropriate for most skin types, including sensitive skin. The following guidelines ensure safe, effective use.

Pause or avoid use if you have:

Active acne lesions or inflamed breakouts in the treatment areaActive rosacea flaresEczema, psoriasis, or severely compromised barrier functionOpen wounds, cuts, or irritated skinRecently treated skin (within two weeks of professional treatments such as chemical peels, microneedling, or laser)Prescription retinoid use — discontinue for 48 hours before treatment

General guidelines:

Never use the device without serum on the skin. The skin must be moist and slippery throughout.Never reuse a cartridge. Each tip is single-use only.The device should never feel sharp or scratching. If it does, stop immediately.Always apply SPF the morning after every treatment.Do not infuse exosome, stem cell, or growth factor serums through the device. Apply them after.