What is Dr. Grandel Smart Nature Day Serum?
Dr. Grandel Smart Nature Day Serum is an active-ingredient serum and a certified natural cosmetic. It belongs to the brand’s oat-based Smart Nature line. Dr. Grandel also designed it for daytime use and formulated its light texture for all skin types.
The brand built the serum to improve the look of skin smoothness while helping reduce visible signs of aging. For this purpose, it relies on Oat Protect Extract and phytoglycogen. This 50 ml bottle is Dr. Grandel’s retail size for daily use at home.
Key benefits
- Smooths and moisturizes: formulated to leave skin feeling soft and nourished throughout the day.
- Supports skin’s own moisture synthesis: phytoglycogen is also included to support the skin’s production of hyaluronan, collagen and ceramides.
- Calming oat base: in addition, Dr. Grandel formulated its oatmeal-derived ingredients to soothe the skin and reduce the look of irritation.
- Boosts radiance: Dr. Grandel designed the serum so that regular use leaves the complexion looking more moisturized and radiant.
Key ingredients
Based on the brand’s published INCI, Avena Sativa (Oat) Bran Extract is the brand’s Oat Protect Extract. Dr. Grandel formulates it to preserve the skin’s moisture level and also reduce the look of lines and wrinkles.
Glycogen, which the brand describes as phytoglycogen, is a sugar of plant origin that energizes the skin. It also supports the synthesis of hyaluronan, collagen and ceramides while improving barrier function. Finally, Avena Sativa (Oat) Kernel Flour has a balancing, nourishing effect, even on stressed skin.
How to use Smart Nature Day Serum
- Shake well before use.
- Then cleanse the skin as usual.
- After that, apply one pipette of serum to the face, neck and décolleté in the morning.
- Finally, follow with a moisturizing cream and daily SPF.
Who Smart Nature Day Serum is for
Dr. Grandel formulates this day serum for all skin types, including sensitive skin. It also suits anyone looking for a light, oat-based active serum to layer into a morning routine.
Retail size vs. professional size
This listing is the 50 ml retail bottle, which suits daily personal use at home. Dr. Grandel also distributes a smaller travel or sample size of this same formula through some retailers.
Full ingredient list (INCI)
Aqua (Water), Glycerin, Avena Sativa (Oat) Kernel Flour, Pentylene Glycol, Avena Sativa (Oat) Bran Extract, Caprylyl Glycol, Hydrogenated Lecithin, Propanediol, Glyceryl Caprylate, Glycogen, Citric Acid, Parfum (Fragrance)
Ingredient list per Dr. Grandel’s official site (grandel.com). Formulas can change; always check the list on the package you receive.





