Can you use retinol and vitamin C together?

Q: Where does each serum go in your day?

Each serum follows its own directions and finishes with the moisturizer named for it. Your step SeneSerum-C® Hydrating C-Pearls® Serum Advanced SenePlex+® Renewal Serum with Retinol Explore When Morning only on nights you use the retinol treatment; otherwise follow the SeneSerum-C directions. At night, starting every other night and increasing to nightly use as tolerated. See the skincare order How Massage gently all over the face until the pearls have completely absorbed. Apply to a clean face, concentrating on areas of concern. Retinol in the serum Moisturizer afterward DayTime or Evening Moisturizer. Evening Moisturizer. Choose your moisturizers

Quick answer

Yes. Use SeneGence SeneSerum-C® Hydrating C-Pearls® Serum in the morning and Advanced SenePlex+® Renewal Serum with Retinol at night under Evening Moisturizer, starting every other night and building to nightly use as tolerated. SeneSerum-C carries Tetrahexyldecyl Ascorbate, an oil-soluble vitamin C, and the Renewal Serum pairs Retinol and Retinyl Palmitate with Palmitoyl Tripeptide-1 and Palmitoyl Tetrapeptide-7. In a six-week independent consumer study, 88% of women agreed their face looked more youthful after using Advanced SenePlex+® Renewal Serum with Retinol.

By SeneGence · Alan Kante, publisher · Updated October 30, 2026

3 min read

Where does each serum go in your day?

Each serum follows its own directions and finishes with the moisturizer named for it.
Your step	SeneSerum-C® Hydrating C-Pearls® Serum	Advanced SenePlex+® Renewal Serum with Retinol	Explore
When	Morning only on nights you use the retinol treatment; otherwise follow the SeneSerum-C directions.	At night, starting every other night and increasing to nightly use as tolerated.	See the skincare order
How	Massage gently all over the face until the pearls have completely absorbed.	Apply to a clean face, concentrating on areas of concern.	Retinol in the serum
Moisturizer afterward	DayTime or Evening Moisturizer.	Evening Moisturizer.	Choose your moisturizers

What does each serum bring?

SeneSerum-C® Hydrating C-Pearls® Serum keeps its actives at full potency until application, visibly brightens and evens tone, and provides antioxidant protection. Beauty Book 2026 (p. 16). The retinol serum works on a different rhythm, overnight. Advanced SenePlex+® Renewal Serum with Retinol supports a visible reduction in fine lines and wrinkles, smooths texture and refines tone overnight, and helps support firmness and hydration.

C-Pearls release at application, followed by regular-day and retinol-night skincare paths. — C-Pearls® keep vitamins C, A and E stable until the pump releases them at application. SeneSerum-C® is used 1–2 pumps morning and evening on regular days; on retinol nights use it in the morning only, never after retinol. Vitamin C works best in a more acidic environment and retinol in a less acidic one. Microbiome Defense Daytime Moisturizer SPF 15 gives broad-spectrum UVA/UVB protection with Zinc Oxide 6% and Octisalate 5%. In a six-week independent consumer study, 88% of women agreed their face looked more youthful after using Advanced SenePlex+® Renewal Serum with Retinol.

How do I use each one?

On nights you use Advanced SenePlex+® Renewal Serum with Retinol, use SeneSerum-C in the morning only; never layer it after the retinol treatment.

Official SeneSerum-C directions: Following cleansing, apply 1-2 pumps twice a day. Massage gently all over face until pearls have completely absorbed. Follow with DayTime or Evening Moisturizer. On nights you use Advanced SenePlex+® Renewal Serum with Retinol, use SeneSerum-C® in the morning only, never after retinol. Official retinol serum directions: Apply 1-2 pumps of the product onto clean face, concentrating on areas of concern. Follow with SeneGence Evening Moisturizer. Start using every other night and increase to nightly use as tolerated. Use a broad-spectrum sunscreen with a minimum of SPF 15 and avoid sun exposure while using retinol. For external use only. Avoid contact with eyes. If contact occurs, rinse thoroughly with water. Discontinue use if signs of irritation or rash appear. Keep out of the reach of children.

How do I build the routine?

Let SeneSerum-C lead your morning under DayTime Moisturizer, then finish skincare with sun protection. Microbiome Defense Daytime Moisturizer SPF 15 gives broad-spectrum UVA/UVB protection with Zinc Oxide 6% and Octisalate 5%. See its sunscreen label. Apply Microbiome Defense Daytime Moisturizer SPF 15 generously and evenly as the last skincare step, 15 minutes before sun exposure, and reapply at least every 2 hours; use a water-resistant sunscreen if swimming or sweating. See where SPF goes. Keep retinol for the evening, under Evening Moisturizer. SeneSerum-C or Read the official ingredients and directions. Start retinol comfortably, or compare SeneSerum-C with C-Bright.

Why do vitamin C and retinol go in separate steps?

Dermatologists keep vitamin C and retinol in separate steps because vitamin C works best in a more acidic environment and retinol in a less acidic one. On nights you use Advanced SenePlex+® Renewal Serum with Retinol, keep SeneSerum-C® for the morning, and never layer vitamin C after retinol. SeneSerum-C’s C-Pearls® keep vitamins C, A (as Retinyl Palmitate) and E stable until the pump releases them.