Creams for Device Use and Eye Cream Formulation Considerations

Subject: Regarding creams for vitamin pushing machines and eye cream formulation

Here are the considerations for your two questions:

1. Creams for use with hot/cold vitamin pushing machines:

   • Yes, creams used with these machines often require different considerations compared to regular creams.
   • Texture and Viscosity: The cream needs a texture that allows the machine head to glide smoothly over the skin without excessive drag or pilling.
   • Stability: The formulation must be stable under temperature variations (both heating and cooling) without separating or degrading.
   • Ingredient Compatibility: Some ingredients might react differently or become less stable or potentially irritating when heated or cooled. The formulation needs to ensure ingredient integrity and efficacy under these conditions.
   • Absorption and Delivery: The cream is often formulated to facilitate the penetration and absorption of active ingredients with the help of the machine's technology.
   • Conductivity (if applicable): If the machine also uses electrical currents (like iontophoresis), the formulation might need to be conductive. (Note: The user only mentioned hot/cold, but this is a common feature of such machines).

2. Ingredient selection for eye cream:

   • Ingredient selection for eye cream requires significant care and is different from general facial creams.
   • Sensitivity: The skin around the eyes is much thinner and more delicate, making it highly susceptible to irritation. Ingredients must be very gentle and non-sensitizing.
   • pH Level: The pH of the eye cream should be close to the pH of tears (around 7.0-7.4) to minimize irritation if it accidentally enters the eye. General facial creams can have a wider pH range.
   • Avoid Irritants: Fragrances, harsh preservatives, strong acids (like high concentrations of AHAs/BHAs), and certain potent active ingredients used in facial creams are often avoided or used at much lower concentrations in eye creams.
   • Targeted Concerns: Eye creams are formulated to address specific concerns like fine lines, wrinkles, dark circles, and puffiness, using ingredients known to be effective and safe for the eye area (e.g., peptides, hyaluronic acid, gentle forms of Vitamin C or Retinol, caffeine).
   • Texture: Lighter, easily absorbed textures are often preferred to avoid clogging pores and causing milia around the eyes.

In summary, both creams for device use and eye creams have specific formulation requirements that go beyond those of standard facial creams due to the method of application (device) or the sensitivity of the application area (eyes).