In cosmetic formulation, a pleasant skin feel is never just about instant slip.
A truly high-quality silicone system must deliver easy spreadability, fast dry-down, and long-lasting softness, without greasiness or heaviness.

IOTA 1501 was developed precisely to achieve this balance.

1. What Is IOTA 1501?

IOTA 1501 is a silicone elastomer-type dispersion, consisting of approximately 15% ultra-high-molecular-weight Dimethiconol dispersed in Cyclopentasiloxane.

• Cyclopentasiloxane (D5) provides excellent spreadability, fast evaporation, and a light sensory profile.

• Dimethiconol, a hydroxyl-terminated polydimethylsiloxane, forms a durable, flexible silicone film on skin or hair.

Rather than a simple blend, the Dimethiconol is finely and stably dispersed, enabling a controlled sensory transition during application.

2. Why Does It Feel Different?

Unlike conventional silicones that feel slippery only at first touch, IOTA 1501 delivers a multi-stage sensory experience:

1. During application, Cyclopentasiloxane allows the product to spread effortlessly.

2. As the volatile carrier evaporates, Dimethiconol gradually deposits on the surface.

3. A thin, elastic silicone film forms, leaving a smooth, silky, and non-sticky finish.

This mechanism explains why IOTA 1501 feels luxurious yet clean, with no greasy residue or artificial slip.

3. Film-Forming Without Heaviness

Dimethiconol’s hydroxyl end groups contribute to the formation of a uniform, flexible, and cohesive silicone film.

This film provides:

• Water and sweat resistance

• Improved softness and surface smoothness

• Reduced appearance of fine lines on skin

• Cuticle smoothing and split-end repair on hair

Importantly, the film remains breathable and lightweight, avoiding the occlusive feel often associated with heavy oils.

4. Ideal for Hair Care Applications

On hair, IOTA 1501 helps:

• Smooth lifted cuticles

• Reduce frizz and flyaways

• Improve combability and shine

• Protect hair fibers from mechanical stress

Because the film is flexible and non-brittle, it enhances hair aesthetics without stiffness or buildup.

5. A Proven Solution for Antiperspirants

One of the standout applications of IOTA 1501 is in antiperspirant and deodorant formulations.

The Dimethiconol film acts as a controlled fragrance-release matrix, allowing fragrance notes to diffuse gradually over time. Compared with traditional alcohol-based systems, this silicone-based approach offers:

• Lower irritation potential

• Faster drying without burning sensation

• Silky, powdery skin feel

• Fragrance longevity of up to 24 hours

These properties make IOTA 1501 particularly suitable for premium roll-ons, sprays, and soft-solid antiperspirants.

6. Excellent Compatibility and Formulation Flexibility

IOTA 1501 shows good compatibility with:

• Isododecane and other hydrocarbons

• A wide range of ester oils

• Dimethicone and phenyl silicones

It can be incorporated into anhydrous systems, emulsions, and hybrid silicone–oil formulations, making it a versatile sensory modifier across multiple product categories.

7. Wide Range of Applications

Typical applications include:

• Skincare products (serums, lotions, sunscreens)

• Color cosmetics (primers, foundations, lip products)

• Hair care products (leave-in conditioners, hair oils)

• Body care and personal care products

• Antiperspirants and deodorants

8. Final Thought

IOTA 1501 is not designed to make products simply feel smoother—but to make that smoothness last.
It represents a proven, refined silicone solution that combines performance, elegance, and formulation reliability.