Comparison
Spirulina extract vs Brilliant Blue FCF
The short answer
Spirulina extract is the clear pick for safety: an algae extract with no daily limit and no California school ban. Blue 1 is cheaper and holds its color through heat, light and acid, which spirulina can't.| Side by side | Spirulina extract | Brilliant Blue FCF (Blue 1) |
|---|---|---|
| Safety score | 92/100 Generally safe | 45/100 Best to avoid |
| Made from | Spirulina algae ✓ Better | Petroleum-based synthesis |
| FDA phase-out plan | No ✓ Better | Yes (2025 plan) |
| Shade | Soft sky blue | Bright, vivid blue |
| Heat and acid stability | Fades with heat and acid | Very stable ✓ Better |
| Price | Higher | Low ✓ Better |
| Safety score | 92 ✓ Better | 45 |
Swapping one for the other
At home, blue spirulina powder colors frosting, smoothies and no-bake treats. Add it after cooking, since heat dulls it, and avoid mixing it with lemon juice.
Common questions
Can spirulina make green food too?
Yes. Mixed with a yellow such as turmeric or safflower, it gives a natural green.