Understanding PVP Grades for Hair Styling

Polyvinylpyrrolidone (PVP) is a film-forming polymer used in hair styling products. The number after the 'K' indicates the average molecular weight, which affects the viscosity and holding power of the polymer.

• PVP-K15, PVP-K17, and PVP-K30: These have lower molecular weights (6,000-80,000 Daltons). They are suitable for liquid styling formulas like sprays and provide a natural, flexible hold without stiffness. The hold increases slightly with the K number, so K30 will offer slightly more hold than K17 or K15.
• PVP-K60 and PVP-K90: These have higher molecular weights (K90 is 900,000-1,500,000 Daltons). They create a harder, stickier film and are better suited for products requiring strong hold, such as gels, creams, or waxes.

Using PVP in Sea Salt Spray

Yes, PVP-K15, PVP-K17, and PVP-K30 are all suitable for use in a sea salt spray formulation. They will help provide the light, natural hold characteristic of this type of product. You can choose the specific grade based on the level of hold you desire, with K30 offering the most hold among these three.

Additional Recommendations for Sea Salt Spray

Besides PVP, key ingredients for a sea salt spray typically include:

• Salt: Magnesium Sulfate (Epsom Salt) or Sodium Chloride (Table Salt) is essential for creating the texture and volume associated with sea salt sprays.
• Humectant: Ingredients like Glycerin can help counteract the drying effect of salt and keep hair moisturized.
• Water: The primary solvent.
• Optional: Conditioning agents, fragrance, and preservatives.