Short answer. No. Your season does not change with a tan.
A tan changes depth. It does not change undertone.
Season is based on three things:
• Undertone
• Value
• Chroma
When you tan:
• Your skin gets deeper.
• You may look slightly warmer on the surface.
• Your contrast may shift a little.
What does not change is your undertone.
If you are a Soft Summer, you are still cool and muted. Even when you tan, your skin will not suddenly turn golden olive in undertone. It may look more bronzed, but the base remains the same.
What can happen is this:
Because your skin is deeper, slightly richer colors within your palette may feel better in summer than your lightest shades. You might lean into mid tone mauves, cool berries, dusty teal instead of your palest pinks.
That is adjusting within your season. Not switching seasons.
If someone is truly neutral leaning and very close to the center, a heavy tan can make them borrow more easily from a sister season. But it does not rewrite their core palette.
Think of it like this.
Your season is your blueprint.
A tan is just lighting.
Lighting changes the appearance. It does not change the structure.