What’s up with white? Part 2: Comparing the effects of twelve months of environmental exposure on pigment 426 White and 1 White.
BlockTalk Summary
The LEGO Group introduced a new white pigment, known as 426 White V3, in selected sets throughout 2025. This newly formulated color offers significantly more opacity than the traditional 1 White pigment.
All plastics, including the ABS used in LEGO elements, naturally undergo photooxidative degradation over time. This chemical process causes the materials to yellow as they age, a reaction that accelerates significantly when exposed to ultraviolet light from the environment.
This ongoing material evolution represents the LEGO Group's continued efforts to improve element quality and appearance. As builders monitor how these new components hold up over time, you can protect your growing collection from environmental wear by using a LEGO storage box to keep sensitive pieces safe from UV exposure.
It is a property of ABS and other plastics that they will undergo photooxidative degradation – the materials will yellow with age, particularly in response to ultraviolet light. In 2025, the LEGO Group introduced a new white pigment in selected sets. This colour, referred to as 426 White V3 is more opaque than the 1 … Continue reading What’s up with white? Part 2: Comparing the effects of twelve months of environmental exposure on pigment 426 White and 1 White.
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