Hashtag Strategy For Social Media

Based on the information provided, here are some potential hashtags to incorporate into your holiday sale campaign:
Campaign-Specific Hashtags:
#EcoHolidaySale – This combines your brand identity with the event. It's specific enough that it won't be drowned out by more general holiday sale hashtags.
#SustainableGifts – This directly appeals to your target audience who are looking for eco-conscious gift options.
#GreenHoliday – This highlights the theme of a sustainable holiday season.
Trending Industry Hashtags:

#CircularFashion – As a current buzzword in the sustainable fashion industry, it can help attract a wider audience who are interested in this concept.

#ZeroWasteGifts – This ties in with the zero-waste trend and positions your products as environmentally friendly gift choices.
Audience-Specific Hashtags:

#EcoConsciousGifts – This hashtag is a more direct way of reaching your target audience of eco-conscious consumers.

#EthicalFashionista – Your audience prides themselves on their eco-friendly choices, and this hashtag celebrates that identity.
General Hashtags:

#EcoFashion – You've had success with this hashtag in the past, so it's worth continuing to use.

#SustainableStyle – This is another previously successful hashtag for you, and still relevant.
Competitor-Inspired Hashtags:

#GreenWardrobe – Inspired by a competitor's hashtag, this can help reach users who are interested in sustainable fashion.

Remember, while Instagram allows up to 30 hashtags per post, using the maximum amount can sometimes look spammy. A good rule of thumb is to use between 5-10 relevant hashtags per post. Also, keep track of the engagement and reach you get from these hashtags to inform your future hashtag strategy. Happy posting!