Can I use this several times before needed to dry it out? Is there a way of knowing when it needs drying? Thanks.

Yes you could use more than once, but it would depend on the size of the flowers. There is not way of knowing unless you purchase a product with an indicator included (typically orange silica that goes green. I would suggest perhaps a light dryinging afer each use to be sure it is at it's most effective.

Do you need to use this in a microwave or oven?

No you do not use it in a microwave or oven - simply seal in a container along with your flowers and leave for a period of time say 5-8 days (depends on the flowers / quantity). As the flowers dry the silica gel will aborb the moisture. What you can do is recharge the gel by putting in a oven on a low heat (say 100c for an hour or 2) or by putting in a microware on defrost for about 15-20 minutes but this is not the recommended method as it tends to break down the grains

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500g Granular Silica Gel 0.5-1mm Grains, Flower Drying (500g Bag - ws)

500g Granular Silica Gel 0.5-1mm Grains, Flower Drying (500g Bag - ws)

Product ID: 407528772

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🌸0.5-1mm granules gentle on delicate flowers

💧30% moisture absorption capacity

♻️Reusable via oven or microwave reactivation

Description

💼 Stay dry, stay sharp — moisture control that works as hard as you do!

COMPACT EFFICIENT - 500g bag sized for easy storage and versatile use around home or office.
ECO SMART REUSABILITY - Simply bake or microwave to reactivate—sustainability meets convenience.
DELICATE FLOWER FRIENDLY - Fine 0.5-1mm grains protect fragile petals during drying.
MULTI PURPOSE POWERHOUSE - Perfect for flower drying, dehumidifiers, and packaging protection.
ULTIMATE MOISTURE CONTROL - Absorbs up to 30% of its own weight to keep your valuables dry and pristine.

Trustleaf’s 500g Granular Silica Gel features fine 0.5-1mm grains designed to gently dry flowers and absorb moisture up to 30% of its weight. This versatile, reusable silica gel can be reactivated in an oven or microwave, making it an eco-friendly solution for dehumidifying, packaging, and preserving delicate items.

Specifications

Brand	Trustleaf
Product Dimensions	16 x 25 x 2.5 cm; 540 g
Material	Silica
Item Weight	540 g

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