Photostable

Photostable describes a substance or material that resists degradation or alteration when exposed to light, particularly ultraviolet (UV) radiation. It implies a high degree of resistance to photochemical reactions like photodegradation, where the light's energy breaks down chemical bonds. Photostability is crucial for preserving the integrity, color, and function of products such as plastics, dyes, and pharmaceuticals, extending their lifespan and maintaining their desired properties. The evaluation of a substance's photostability often involves rigorous testing under controlled light exposure.

Photostable meaning with examples

• The new sunscreen boasts photostable filters, ensuring effective UV protection throughout the day. These filters don't break down quickly when exposed to sunlight, unlike older formulations. Its photostability is essential, as it allows for continuous efficacy and doesn't require frequent reapplication due to degradation. Consumers appreciate the long-lasting shield offered by photostable sunscreens, safeguarding their skin effectively.
• Manufacturers use photostable pigments in car paint to prevent fading and maintain color vibrancy over years of sun exposure. This ensures the vehicle maintains its aesthetic appeal and value. The durability achieved through these photostable paints reduces the need for repainting and contributes to lower environmental impact, making the cars more durable against environmental damage.
• The researchers developed a photostable drug formulation, enabling it to maintain its potency even when exposed to light during storage. This enhanced stability is vital for the drug's effectiveness and shelf life. Their innovation addresses the issue of drug degradation and allows for safer handling by healthcare providers and patients during administration and distribution.
• The museum carefully selects photostable display materials and lighting for preserving valuable artifacts and artwork. By using UV-filtered light and special protective cases, they can reduce light-induced damage. This is vital in order to slow the inevitable degradation, helping the artifacts last as long as possible for further research and public viewing.