user71641: We know that, for security and anonymity, we shouldn't reuse addresses. Also, there is the idea of change avoidance to protect ourselves from any number of change detection heuristics.
But I find that unspent change addresses ("UTXO's") are often unavoidable. Especially when using other privacy-enhancing techniques, such as equal-output CoinJoins, where you end up with many source addresses.
Is there a good technique to be able to spend these UTXO's without compromising privacy?

user-1: 
Is there a good technique to be able to spend these UTXO's without compromising privacy?


Never consolidate UTXOs after coinjoin.
Spend and use them separately.
Use payjoin.
Avoid sending directly to any KYC exchange. Bisq is one of the DEX which can be used.
Never share them on social media or any public groups which could result in associating your identity with UTXO.


71641: <p>We know that, for security and anonymity, we <a href="https://en.bitcoin.it/wiki/Privacy#Avoiding_address_reuse" rel="nofollow noreferrer">shouldn't reuse addresses</a>. Also, there is the idea of <a href="https://en.bitcoin.it/wiki/Privacy#Change_avoidance" rel="nofollow noreferrer">change avoidance</a> to protect ourselves from any number of <a href="https://en.bitcoin.it/wiki/Privacy#Change_address_detection" rel="nofollow noreferrer">change detection heuristics</a>.</p>

<p>But I find that unspent change addresses ("UTXO's") are often unavoidable. Especially when using other privacy-enhancing techniques, such as equal-output <a href="https://en.bitcoin.it/wiki/Privacy#CoinJoin" rel="nofollow noreferrer">CoinJoins</a>, where you end up with many source addresses.</p>

<p>Is there a good technique to be able to spend these UTXO's without compromising privacy?</p>
 -1: <blockquote>
<p>Is there a good technique to be able to spend these UTXO's without compromising privacy?</p>
</blockquote>
<ol>
<li>Never consolidate UTXOs after coinjoin.</li>
<li>Spend and use them separately.</li>
<li>Use payjoin.</li>
<li>Avoid sending directly to any KYC exchange. Bisq is one of the DEX which can be used.</li>
<li>Never share them on social media or any public groups which could result in associating your identity with UTXO.</li>
</ol>
