es, we can cast human hair in resin, as long as you follow some steps and precautions. Here we have some techniques for casting human hair in resin:

• Prepare the hair: You should wash and dry the hair before using it in resin, to remove any dirt, oil, or product residue. You should also trim the hair to the desired length and arrange it in a neat or creative way. 
• Choose the resin: You should use a clear and high-quality resin that is suitable for casting, such as epoxy resin or UV resin. 
• Choose the mould: You should use a mould that is compatible with resin, such as silicone moulds, which are flexible and easy to release the resin from, or rigid moulds, which are more durable and can create sharper edges. 
• Cast the hair in resin: You should pour a thin layer of resin into the mould, and let it cure slightly until it is tacky. Then, you should place the hair on top of the resin and press it gently to make sure it is fully submerged. You can use a toothpick or a needle to adjust the position of the hair or remove any air bubbles. You should then pour another layer of resin over the hair and let it cure completely. 

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