💧 CIRCADIA PRO HA Serum is a single-active hyaluronic acid facial serum built for backbar use — clean enough for advanced protocols, concentrated enough to deliver visible hydration results across a full treatment day.

Sodium Hyaluronate draws moisture to the skin surface, visibly plumping dehydration-related fine lines and improving the appearance of elasticity with consistent use. The fragrance-free, minimal formulation makes it a reliable choice where ingredient load matters most: microneedling glide, immediate post-procedure recovery, or any multi-step facial where you need a low-irritant hydration layer before heavier emollients and occlusives. Dry, dehydrated, mature, and post-treatment skin types are all in scope.

The salon-size format is a real cost-in-use advantage in high-volume settings — fewer mid-service shortages, better replenishment forecasting, and room to use generously without rationing.

A strong fit for estheticians running advanced treatment protocols who need a versatile, protocol-safe hydration step they can count on service after service.

• Visible Surface Hydration: Hyaluronic Acid draws moisture to the upper skin layers, immediately improving the look and feel of dry or dehydrated skin with a plumped, refreshed appearance.
• Reduction in the Appearance of Fine Lines: By restoring surface hydration, the serum visually softens fine, dehydration-related lines, leaving skin looking smoother after application.
• Improved Appearance of Elasticity: Regular use of Hyaluronic Acid in a leave-on format helps skin maintain a firmer, more supple appearance by keeping surface tissues consistently hydrated.
• Skin Barrier Support: Sodium Hyaluronate forms a lightweight moisture-retaining film on the skin surface that reinforces the barrier, helping to reduce water loss and protect against the appearance of environmental dryness.
• Protocol Compatibility for Advanced Treatments: The clean, fragrance-free, single-active formulation makes this serum well-suited for use in microneedling, post-treatment recovery facials, and other advanced esthetic protocols where a low-irritant, high-hydration vehicle is needed.

Sodium Hyaluronate - known as Hyaluronic Acid: The sodium salt form of hyaluronic acid, sodium hyaluronate is a high-performance humectant that attracts and binds moisture to the skin surface. In a leave-on serum applied to freshly cleansed or post-procedure skin, it draws water from the environment and deeper tissue layers to the upper skin layers, producing visible plumping and reduction in the appearance of fine, dehydration-related lines. It also lays down a lightweight moisture-retaining film that supports the skin's natural barrier function and improves the surface appearance of elasticity over time with consistent use.

1. Cleanse the client's skin thoroughly and prepare the treatment area as required by the service protocol.
2. Dispense 2 to 4 pumps of serum onto fingertips or a clean applicator, adjusting quantity to the size of the treated area.
3. Apply the serum evenly across the client's face, avoiding the eye area.
4. Massage gently until the serum is fully absorbed into the skin.
5. Proceed with the next step of the facial or treatment protocol, or finish with an appropriate moisturizer or SPF if this is the final treatment step.

Integration into advanced treatment protocols

For microneedling services, this serum's minimal, fragrance-free formulation makes it an appropriate glide medium or immediate post-needling hydration step — the single-active, preservative-only formula reduces the risk of post-procedure sensitivity compared to multi-ingredient serums. When layering within a multi-step facial, apply this serum before heavier emollients or occlusives to maximize humectant uptake; applying a film-forming moisturizer over the top will lock in the hydration delivered by the Hyaluronic Acid. The 4 oz. backbar size is a significant cost-in-use advantage in high-volume treatment environments — track usage per service to forecast replenishment cycles and avoid mid-service shortages.