Sente Retinol Face Serum for Sensitive Skin — Bio Complete Serum 1 fl oz, Slow-Release Retinoid + HSA Hydration

Sente Bio Complete Serum is a slow-release retinoid face serum formulated to help smooth the look of fine lines and even skin texture while remaining suitable for sensitive skin and first-time retinol users.

This lightweight 1 fl oz serum combines a gentle retinoid delivery with Sente's patented HSA (Heparan Sulfate Analog) technology to support hydration as skin renews overnight. The formula is designed to minimize irritation commonly associated with stronger retinoids through controlled release and hydrating actives, and it has been clinically tested for improvements in skin evenness over an eight-week period. Use it as part of your evening routine, followed by a moisturizer, to help maintain comfort and visible texture refinement.

How does this serum work for sensitive skin?

Sente Bio Complete Serum uses a slow-release retinoid system that releases active ingredients gradually, which helps reduce common retinoid irritation such as dryness or redness. HSA technology helps hold moisture in the skin while the retinoid supports cell turnover, balancing efficacy and tolerance.

• Slow-release retinoid reduces peak irritation compared to fast-acting retinoids.
• HSA (Heparan Sulfate Analog) helps retain hydration during treatment.
• Hydrating base soothes skin and supports barrier comfort.

What results can I expect and in what timeframe?

Clinical testing showed improved skin evenness for most participants after eight weeks of regular use, but individual results vary. Expect gradual improvements in texture and the appearance of fine lines as the skin renews; consistency with evening application is key.

• Visible skin-evenness improvements reported in clinical study at 8 weeks.
• Texture and fine-line appearance typically refine over weeks with nightly use.
• Pairing with a moisturizer can improve comfort and tolerance from the first applications.

How should I include this serum in my skincare routine?

Apply 1–2 pumps to clean, dry skin in the evening after cleansing and before a moisturizer. Start with fewer nights per week if you are new to retinoids, then increase frequency as tolerance builds; always follow with a hydrating moisturizer and sun protection during daytime.

• Evening use: 1–2 pumps applied gently until absorbed.
• Begin slowly (every other night) if you are a first-time retinoid user.
• Use daily sunscreen in the morning while using retinoids to protect skin.

What are the key ingredients and safety considerations?

The serum pairs a gentle, slow-release retinoid with Sente's HSA to balance renewal and hydration. It's formulated to limit common retinoid side effects, but it's wise to patch-test and avoid combining with other strong exfoliants until tolerance is established.

• Slow-release retinoid for controlled activity and reduced irritation.
• HSA (Heparan Sulfate Analog) supports moisture retention and comfort.
• Avoid mixing with potent exfoliants initially; patch testing recommended.

Who is this for? Sente Bio Complete Serum is intended for people seeking retinoid benefits—smoother texture and reduced appearance of fine lines—without the harshness of traditional retinoids. It’s tailored for sensitive-skin types and first-time retinoid users who want a measured, hydrating approach to night-time skin renewal. If you have specific skin conditions or are pregnant or nursing, consult a healthcare professional before adding retinoids to your routine.